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511990212 = 223238092293
BaseRepresentation
bin11110100001000…
…101100111000100
31022200101210112110
4132201011213010
52022032141322
6122445421020
715454562556
oct3641054704
91280353473
10511990212
11243006908
1212356a770
13820c27b6
144bdd74d6
152ee35c0c
hex1e8459c4

511990212 has 48 divisors (see below), whose sum is σ = 1248670080. Its totient is φ = 162970368.

The previous prime is 511990181. The next prime is 511990243. The reversal of 511990212 is 212099115.

It is an interprime number because it is at equal distance from previous prime (511990181) and next prime (511990243).

It is a self number, because there is not a number n which added to its sum of digits gives 511990212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222138 + ... + 224430.

It is an arithmetic number, because the mean of its divisors is an integer number (26013960).

Almost surely, 2511990212 is an apocalyptic number.

It is an amenable number.

511990212 is an abundant number, since it is smaller than the sum of its proper divisors (736679868).

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

511990212 is a wasteful number, since it uses less digits than its factorization.

511990212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 3130 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 511990212 is about 22627.2007106491. The cubic root of 511990212 is about 799.9949020508.

The spelling of 511990212 in words is "five hundred eleven million, nine hundred ninety thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 809 1618 2293 2427 3236 4586 4854 6879 9172 9708 13758 18607 27516 37214 52739 55821 74428 105478 111642 158217 210956 223284 316434 632868 1855037 3710074 5565111 7420148 11130222 22260444 42665851 85331702 127997553 170663404 255995106 511990212