28531520514 has 40 divisors (see below), whose sum is σ = 73064849088. Its totient is φ = 8151862680.

The previous prime is 28531520513. The next prime is 28531520527. The reversal of 28531520514 is 41502513582.

28531520514 is a `hidden beast` number, since 2 + 85 + 3 + 1 + 520 + 51 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (28531520513) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12578902 + ... + 12581169.

Almost surely, 2^28531520514 is an apocalyptic number.

28531520514 is an abundant number, since it is smaller than the sum of its proper divisors (44533328574).

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

28531520514 is a wasteful number, since it uses less digits than its factorization.

28531520514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25160092 (or 25160083 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 28531520514 in words is "twenty-eight billion, five hundred thirty-one million, five hundred twenty thousand, five hundred fourteen".