78957748 has 12 divisors (see below), whose sum is σ = 138539520. Its totient is φ = 39375032.

The previous prime is 78957727. The next prime is 78957763. The reversal of 78957748 is 84775987.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24238 + ... + 27301.

It is an arithmetic number, because the mean of its divisors is an integer number (11544960).

Almost surely, 2^78957748 is an apocalyptic number.

It is an amenable number.

78957748 is a deficient number, since it is larger than the sum of its proper divisors (59581772).

78957748 is a wasteful number, since it uses less digits than its factorization.

78957748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51926 (or 51924 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 55.

The square root of 78957748 is about 8885.8172387237. The cubic root of 78957748 is about 429.0075326095.

The spelling of 78957748 in words is "seventy-eight million, nine hundred fifty-seven thousand, seven hundred forty-eight".