80138856 has 32 divisors (see below), whose sum is σ = 228968640. Its totient is φ = 22896768.

The previous prime is 80138843. The next prime is 80138869. The reversal of 80138856 is 65883108.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80138843) and next prime (80138869).

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, 238341 + ... + 238676.

It is an arithmetic number, because the mean of its divisors is an integer number (7155270).

Almost surely, 2^80138856 is an apocalyptic number.

It is an amenable number.

80138856 is an abundant number, since it is smaller than the sum of its proper divisors (148829784).

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

80138856 is a wasteful number, since it uses less digits than its factorization.

80138856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477033 (or 477029 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 80138856 is about 8952.0308310461. The cubic root of 80138856 is about 431.1360907299.

The spelling of 80138856 in words is "eighty million, one hundred thirty-eight thousand, eight hundred fifty-six".