78626740 has 24 divisors (see below), whose sum is σ = 166309920. Its totient is φ = 31223328.

The previous prime is 78626729. The next prime is 78626753. The reversal of 78626740 is 4762687.

It is a junction number, because it is equal to n+sod(n) for n = 78626693 and 78626702.

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, 11362 + ... + 16921.

It is an arithmetic number, because the mean of its divisors is an integer number (6929580).

Almost surely, 2^78626740 is an apocalyptic number.

It is an amenable number.

78626740 is an abundant number, since it is smaller than the sum of its proper divisors (87683180).

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

78626740 is a wasteful number, since it uses less digits than its factorization.

78626740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28431 (or 28429 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 78626740 is about 8867.1720407354. The cubic root of 78626740 is about 428.4071953790.

The spelling of 78626740 in words is "seventy-eight million, six hundred twenty-six thousand, seven hundred forty".