78774948 has 54 divisors (see below), whose sum is σ = 231641046. Its totient is φ = 22506624.

The previous prime is 78774919. The next prime is 78774953. The reversal of 78774948 is 84947787.

It can be written as a sum of positive squares in only one way, i.e., 67765824 + 11009124 = 8232^2 + 3318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78774894 and 78774903.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20565 + ... + 24092.

It is an arithmetic number, because the mean of its divisors is an integer number (4289649).

Almost surely, 2^78774948 is an apocalyptic number.

It is an amenable number.

78774948 is an abundant number, since it is smaller than the sum of its proper divisors (152866098).

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

78774948 is a wasteful number, since it uses less digits than its factorization.

78774948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44681 (or 44669 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 78774948 is about 8875.5252238952. The cubic root of 78774948 is about 428.6762027644.

The spelling of 78774948 in words is "seventy-eight million, seven hundred seventy-four thousand, nine hundred forty-eight".