78903472 has 10 divisors (see below), whose sum is σ = 152875508. Its totient is φ = 39451728.

The previous prime is 78903469. The next prime is 78903481. The reversal of 78903472 is 27430987.

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2465718 + ... + 2465749.

Almost surely, 2^78903472 is an apocalyptic number.

It is an amenable number.

78903472 is a deficient number, since it is larger than the sum of its proper divisors (73972036).

78903472 is a wasteful number, since it uses less digits than its factorization.

78903472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931475 (or 4931469 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 78903472 is about 8882.7626333253. The cubic root of 78903472 is about 428.9092093466.

The spelling of 78903472 in words is "seventy-eight million, nine hundred three thousand, four hundred seventy-two".