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214520520 = 23357972243
BaseRepresentation
bin11001100100101…
…01001011001000
3112221122202211110
430302111023020
5414404124040
633141530320
75213252154
oct1462251310
9487582743
10214520520
11100100495
125ba139a0
133559c626
14206c2064
1513c76980
hexcc952c8

214520520 has 64 divisors (see below), whose sum is σ = 644656320. Its totient is φ = 57108224.

The previous prime is 214520503. The next prime is 214520539. The reversal of 214520520 is 25025412.

It is a happy 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, 94519 + ... + 96761.

It is an arithmetic number, because the mean of its divisors is an integer number (10072755).

Almost surely, 2214520520 is an apocalyptic number.

214520520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214520520 is an abundant number, since it is smaller than the sum of its proper divisors (430135800).

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

214520520 is a wasteful number, since it uses less digits than its factorization.

214520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3050 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 214520520 is about 14646.5190403727. The cubic root of 214520520 is about 598.6269714957.

Adding to 214520520 its reverse (25025412), we get a palindrome (239545932).

The spelling of 214520520 in words is "two hundred fourteen million, five hundred twenty thousand, five hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 797 1594 2243 2391 3188 3985 4486 4782 6376 6729 7970 8972 9564 11215 11955 13458 15940 17944 19128 22430 23910 26916 31880 33645 44860 47820 53832 67290 89720 95640 134580 269160 1787671 3575342 5363013 7150684 8938355 10726026 14301368 17876710 21452052 26815065 35753420 42904104 53630130 71506840 107260260 214520520