515233872 has 140 divisors (see below), whose sum is σ = 1511452864. Its totient is φ = 170061120.

The previous prime is 515233861. The next prime is 515233883. The reversal of 515233872 is 278332515.

It is a happy number.

515233872 is a `hidden beast` number, since 51 + 523 + 3 + 87 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (515233861) and next prime (515233883).

It is a super-2 number, since 2×515233872² = 530931885712224768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1901097 + ... + 1901367.

Almost surely, 2^515233872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515233872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755726432).

515233872 is an abundant number, since it is smaller than the sum of its proper divisors (996218992).

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

515233872 is a wasteful number, since it uses less digits than its factorization.

515233872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 439 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 515233872 is about 22698.7636667727. The cubic root of 515233872 is about 801.6807746062.

The spelling of 515233872 in words is "five hundred fifteen million, two hundred thirty-three thousand, eight hundred seventy-two".