78426072 has 48 divisors (see below), whose sum is σ = 223587000. Its totient is φ = 24765696.

The previous prime is 78426043. The next prime is 78426077. The reversal of 78426072 is 27062487.

78426072 is a `hidden beast` number, since 7 + 8 + 42 + 607 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78426077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27297 + ... + 30032.

Almost surely, 2^78426072 is an apocalyptic number.

78426072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78426072 is an abundant number, since it is smaller than the sum of its proper divisors (145160928).

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

78426072 is a wasteful number, since it uses less digits than its factorization.

78426072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57360 (or 57353 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 78426072 is about 8855.8495922187. The cubic root of 78426072 is about 428.0424303584.

The spelling of 78426072 in words is "seventy-eight million, four hundred twenty-six thousand, seventy-two".