78620652 has 48 divisors (see below), whose sum is σ = 222364800. Its totient is φ = 23824080.

The previous prime is 78620639. The next prime is 78620683. The reversal of 78620652 is 25602687.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31902 + ... + 34277.

It is an arithmetic number, because the mean of its divisors is an integer number (4632600).

Almost surely, 2^78620652 is an apocalyptic number.

It is an amenable number.

78620652 is an abundant number, since it is smaller than the sum of its proper divisors (143744148).

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

78620652 is a wasteful number, since it uses less digits than its factorization.

78620652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66203 (or 66195 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 78620652 is about 8866.8287453858. The cubic root of 78620652 is about 428.3961380283.

The spelling of 78620652 in words is "seventy-eight million, six hundred twenty thousand, six hundred fifty-two".