78789632 has 22 divisors (see below), whose sum is σ = 157504368. Its totient is φ = 39394304.

The previous prime is 78789629. The next prime is 78789647. The reversal of 78789632 is 23698787.

It is a happy number.

It is a super-2 number, since 2×78789632² = 12415612221390848, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37448 + ... + 39495.

Almost surely, 2^78789632 is an apocalyptic number.

It is an amenable number.

78789632 is a deficient number, since it is larger than the sum of its proper divisors (78714736).

78789632 is an equidigital number, since it uses as much as digits as its factorization.

78789632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76963 (or 76945 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 78789632 is about 8876.3524040002. The cubic root of 78789632 is about 428.7028368253.

The spelling of 78789632 in words is "seventy-eight million, seven hundred eighty-nine thousand, six hundred thirty-two".