515113888 has 48 divisors (see below), whose sum is σ = 1063843200. Its totient is φ = 245051136.

The previous prime is 515113871. The next prime is 515113913. The reversal of 515113888 is 888311515.

It is a super-2 number, since 2×515113888² = 530684635220953088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 515113888.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144706 + ... + 148222.

It is an arithmetic number, because the mean of its divisors is an integer number (22163400).

Almost surely, 2^515113888 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 515113888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531921600).

515113888 is an abundant number, since it is smaller than the sum of its proper divisors (548729312).

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

515113888 is a wasteful number, since it uses less digits than its factorization.

515113888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749 (or 3741 counting only the distinct ones).

The product of its digits is 38400, while the sum is 40.

The square root of 515113888 is about 22696.1205495565. The cubic root of 515113888 is about 801.6185398692.

The spelling of 515113888 in words is "five hundred fifteen million, one hundred thirteen thousand, eight hundred eighty-eight".