78633948 has 12 divisors (see below), whose sum is σ = 183479240. Its totient is φ = 26211312.

The previous prime is 78633943. The next prime is 78633953. The reversal of 78633948 is 84933687.

It is an interprime number because it is at equal distance from previous prime (78633943) and next prime (78633953).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 78633897 and 78633906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78633943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3276403 + ... + 3276426.

Almost surely, 2^78633948 is an apocalyptic number.

It is an amenable number.

78633948 is an abundant number, since it is smaller than the sum of its proper divisors (104845292).

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

78633948 is a wasteful number, since it uses less digits than its factorization.

78633948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552836 (or 6552834 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 78633948 is about 8867.5784744202. The cubic root of 78633948 is about 428.4202861956.

It can be divided in two parts, 7863 and 3948, that added together give a palindrome (11811).

The spelling of 78633948 in words is "seventy-eight million, six hundred thirty-three thousand, nine hundred forty-eight".