80624440 has 32 divisors (see below), whose sum is σ = 195360480. Its totient is φ = 29768832.

The previous prime is 80624431. The next prime is 80624461. The reversal of 80624440 is 4442608.

It is a junction number, because it is equal to n+sod(n) for n = 80624399 and 80624408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77004 + ... + 78043.

It is an arithmetic number, because the mean of its divisors is an integer number (6105015).

Almost surely, 2^80624440 is an apocalyptic number.

It is an amenable number.

80624440 is an abundant number, since it is smaller than the sum of its proper divisors (114736040).

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

80624440 is a wasteful number, since it uses less digits than its factorization.

80624440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155071 (or 155067 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 80624440 is about 8979.1113146012. Note that the first 3 decimals coincide. The cubic root of 80624440 is about 432.0051296830.

The spelling of 80624440 in words is "eighty million, six hundred twenty-four thousand, four hundred forty".