513072372 has 12 divisors (see below), whose sum is σ = 1197168896. Its totient is φ = 171024120.

The previous prime is 513072367. The next prime is 513072407. The reversal of 513072372 is 273270315.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21378004 + ... + 21378027.

Almost surely, 2^513072372 is an apocalyptic number.

It is an amenable number.

513072372 is an abundant number, since it is smaller than the sum of its proper divisors (684096524).

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

513072372 is a wasteful number, since it uses less digits than its factorization.

513072372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42756038 (or 42756036 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 513072372 is about 22651.1009003978. The cubic root of 513072372 is about 800.5581375958.

The spelling of 513072372 in words is "five hundred thirteen million, seventy-two thousand, three hundred seventy-two".