Search a number
-
+
385886420 = 22571331821
BaseRepresentation
bin10111000000000…
…010100011010100
3222220010001122122
4113000002203110
51242241331140
6102142515112
712363660203
oct2700024324
9886101578
10385886420
111889061a7
12a9295a98
1361c3c57a
143936d23a
1523d26ab5
hex170028d4

385886420 has 48 divisors (see below), whose sum is σ = 825261696. Its totient is φ = 151536000.

The previous prime is 385886407. The next prime is 385886437. The reversal of 385886420 is 24688583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469610 + ... + 470430.

It is an arithmetic number, because the mean of its divisors is an integer number (17192952).

Almost surely, 2385886420 is an apocalyptic number.

It is an amenable number.

385886420 is an abundant number, since it is smaller than the sum of its proper divisors (439375276).

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

385886420 is a wasteful number, since it uses less digits than its factorization.

385886420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 385886420 is about 19643.9919568300. The cubic root of 385886420 is about 728.0365200252.

The spelling of 385886420 in words is "three hundred eighty-five million, eight hundred eighty-six thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 71 142 284 331 355 662 710 821 1324 1420 1642 1655 3284 3310 4105 6620 8210 16420 23501 47002 58291 94004 116582 117505 233164 235010 271751 291455 470020 543502 582910 1087004 1165820 1358755 2717510 5435020 19294321 38588642 77177284 96471605 192943210 385886420