5156439028 has 24 divisors (see below), whose sum is σ = 9745468488. Its totient is φ = 2373144576.

The previous prime is 5156439019. The next prime is 5156439037. The reversal of 5156439028 is 8209346515.

It is an interprime number because it is at equal distance from previous prime (5156439019) and next prime (5156439037).

It can be written as a sum of positive squares in 4 ways, for example, as 397922704 + 4758516324 = 19948^2 + 68982^2 .

It is a congruent number.

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, 122101 + ... + 158812.

It is an arithmetic number, because the mean of its divisors is an integer number (406061187).

Almost surely, 2^5156439028 is an apocalyptic number.

It is an amenable number.

5156439028 is a deficient number, since it is larger than the sum of its proper divisors (4589029460).

5156439028 is a wasteful number, since it uses less digits than its factorization.

5156439028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281283 (or 281281 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 5156439028 is about 71808.3492917084. The cubic root of 5156439028 is about 1727.6269185738.

The spelling of 5156439028 in words is "five billion, one hundred fifty-six million, four hundred thirty-nine thousand, twenty-eight".