78920948 has 12 divisors (see below), whose sum is σ = 142874340. Its totient is φ = 38099712.

The previous prime is 78920923. The next prime is 78921001. The reversal of 78920948 is 84902987.

It can be written as a sum of positive squares in 2 ways, for example, as 15272464 + 63648484 = 3908^2 + 7978^2 .

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, 340061 + ... + 340292.

It is an arithmetic number, because the mean of its divisors is an integer number (11906195).

Almost surely, 2^78920948 is an apocalyptic number.

It is an amenable number.

78920948 is a deficient number, since it is larger than the sum of its proper divisors (63953392).

78920948 is a wasteful number, since it uses less digits than its factorization.

78920948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680386 (or 680384 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 78920948 is about 8883.7462818340. The cubic root of 78920948 is about 428.9408727780.

The spelling of 78920948 in words is "seventy-eight million, nine hundred twenty thousand, nine hundred forty-eight".