80936856 has 192 divisors, whose sum is σ = 294577920. Its totient is φ = 19388160.

The previous prime is 80936851. The next prime is 80936861. The reversal of 80936856 is 65863908.

80936856 = T₄₉₆ + T₄₉₇ + ... + T₈₄₆.

It is an interprime number because it is at equal distance from previous prime (80936851) and next prime (80936861).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80936851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71511 + ... + 72633.

It is an arithmetic number, because the mean of its divisors is an integer number (1534260).

Almost surely, 2^80936856 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 80936856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147288960).

80936856 is an abundant number, since it is smaller than the sum of its proper divisors (213641064).

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

80936856 is a wasteful number, since it uses less digits than its factorization.

80936856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 80936856 is about 8996.4913160632. The cubic root of 80936856 is about 432.5624104976.

The spelling of 80936856 in words is "eighty million, nine hundred thirty-six thousand, eight hundred fifty-six".