80421936 has 120 divisors (see below), whose sum is σ = 249698304. Its totient is φ = 22216320.

The previous prime is 80421931. The next prime is 80421953. The reversal of 80421936 is 63912408.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 80421897 and 80421906.

It is not an unprimeable number, because it can be changed into a prime (80421931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72361 + ... + 73463.

Almost surely, 2^80421936 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 80421936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124849152).

80421936 is an abundant number, since it is smaller than the sum of its proper divisors (169276368).

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

80421936 is a wasteful number, since it uses less digits than its factorization.

80421936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 80421936 is about 8967.8278306399. The cubic root of 80421936 is about 431.6431380731.

The spelling of 80421936 in words is "eighty million, four hundred twenty-one thousand, nine hundred thirty-six".