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214808400 = 24325259669
BaseRepresentation
bin11001100110110…
…11011101010000
3112222012101201200
430303123131100
5414442332100
633152031200
75215561362
oct1463333520
9488171650
10214808400
11100287804
125bb32500
1335670681
1420758d32
1513cd1e00
hexccdb750

214808400 has 90 divisors (see below), whose sum is σ = 745457310. Its totient is φ = 57281280.

The previous prime is 214808381. The next prime is 214808401. The reversal of 214808400 is 4808412.

It can be written as a sum of positive squares in 3 ways, for example, as 35141184 + 179667216 = 5928^2 + 13404^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a super-2 number, since 2×2148084002 = 92285297421120000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214808401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26235 + ... + 33434.

It is an arithmetic number, because the mean of its divisors is an integer number (8282859).

Almost surely, 2214808400 is an apocalyptic number.

214808400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214808400 is an abundant number, since it is smaller than the sum of its proper divisors (530648910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214808400 is a wasteful number, since it uses less digits than its factorization.

214808400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59693 (or 59679 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 214808400 is about 14656.3433365898. The cubic root of 214808400 is about 598.8946315181.

The spelling of 214808400 in words is "two hundred fourteen million, eight hundred eight thousand, four hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 36 40 45 48 50 60 72 75 80 90 100 120 144 150 180 200 225 240 300 360 400 450 600 720 900 1200 1800 3600 59669 119338 179007 238676 298345 358014 477352 537021 596690 716028 895035 954704 1074042 1193380 1432056 1491725 1790070 2148084 2386760 2685105 2864112 2983450 3580140 4296168 4475175 4773520 5370210 5966900 7160280 8592336 8950350 10740420 11933800 13425525 14320560 17900700 21480840 23867600 26851050 35801400 42961680 53702100 71602800 107404200 214808400