80916400 has 30 divisors (see below), whose sum is σ = 194402612. Its totient is φ = 32366400.

The previous prime is 80916391. The next prime is 80916401. The reversal of 80916400 is 461908.

It is not an unprimeable number, because it can be changed into a prime (80916401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100746 + ... + 101545.

Almost surely, 2^80916400 is an apocalyptic number.

80916400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80916400 is an abundant number, since it is smaller than the sum of its proper divisors (113486212).

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

80916400 is a wasteful number, since it uses less digits than its factorization.

80916400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202309 (or 202298 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 80916400 is about 8995.3543565554. The cubic root of 80916400 is about 432.5259654519.

The spelling of 80916400 in words is "eighty million, nine hundred sixteen thousand, four hundred".