80415780 has 48 divisors (see below), whose sum is σ = 238412160. Its totient is φ = 20182528.

The previous prime is 80415779. The next prime is 80415821. The reversal of 80415780 is 8751408.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38400 + ... + 40439.

It is an arithmetic number, because the mean of its divisors is an integer number (4966920).

Almost surely, 2^80415780 is an apocalyptic number.

It is an amenable number.

80415780 is an abundant number, since it is smaller than the sum of its proper divisors (157996380).

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

80415780 is a wasteful number, since it uses less digits than its factorization.

80415780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78868 (or 78866 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 80415780 is about 8967.4845971432. The cubic root of 80415780 is about 431.6321242333.

The spelling of 80415780 in words is "eighty million, four hundred fifteen thousand, seven hundred eighty".