80413956 has 144 divisors (see below), whose sum is σ = 244852608. Its totient is φ = 21772800.

The previous prime is 80413943. The next prime is 80413981. The reversal of 80413956 is 65931408.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 80413956.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 444186 + ... + 444366.

Almost surely, 2^80413956 is an apocalyptic number.

80413956 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80413956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122426304).

80413956 is an abundant number, since it is smaller than the sum of its proper divisors (164438652).

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

80413956 is a wasteful number, since it uses less digits than its factorization.

80413956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 80413956 is about 8967.3828958063. The cubic root of 80413956 is about 431.6288607654.

The spelling of 80413956 in words is "eighty million, four hundred thirteen thousand, nine hundred fifty-six".