515016428 has 48 divisors (see below), whose sum is σ = 978596640. Its totient is φ = 236261376.

The previous prime is 515016409. The next prime is 515016433. The reversal of 515016428 is 824610515.

It is a super-2 number, since 2×515016428² = 530483842219758368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 515016394 and 515016403.

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, 549176 + ... + 550112.

It is an arithmetic number, because the mean of its divisors is an integer number (20387430).

Almost surely, 2^515016428 is an apocalyptic number.

It is an amenable number.

515016428 is a deficient number, since it is larger than the sum of its proper divisors (463580212).

515016428 is a wasteful number, since it uses less digits than its factorization.

515016428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 515016428 is about 22693.9733850201. The cubic root of 515016428 is about 801.5679810365.

The spelling of 515016428 in words is "five hundred fifteen million, sixteen thousand, four hundred twenty-eight".