78807632 has 20 divisors (see below), whose sum is σ = 156817716. Its totient is φ = 38338560.

The previous prime is 78807629. The next prime is 78807643. The reversal of 78807632 is 23670887.

It can be written as a sum of positive squares in 2 ways, for example, as 74580496 + 4227136 = 8636^2 + 2056^2 .

It is a super-2 number, since 2×78807632² = 12421285722894848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78807632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65969 + ... + 67152.

Almost surely, 2^78807632 is an apocalyptic number.

It is an amenable number.

78807632 is a deficient number, since it is larger than the sum of its proper divisors (78010084).

78807632 is a wasteful number, since it uses less digits than its factorization.

78807632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133166 (or 133160 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 78807632 is about 8877.3662760979. The cubic root of 78807632 is about 428.7354809829.

The spelling of 78807632 in words is "seventy-eight million, eight hundred seven thousand, six hundred thirty-two".