78503272 has 16 divisors (see below), whose sum is σ = 148354560. Its totient is φ = 38942064.

The previous prime is 78503219. The next prime is 78503273. The reversal of 78503272 is 27230587.

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

It is not an unprimeable number, because it can be changed into a prime (78503273) 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, 37618 + ... + 39649.

It is an arithmetic number, because the mean of its divisors is an integer number (9272160).

Almost surely, 2^78503272 is an apocalyptic number.

It is an amenable number.

78503272 is a deficient number, since it is larger than the sum of its proper divisors (69851288).

78503272 is a wasteful number, since it uses less digits than its factorization.

78503272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77400 (or 77396 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 78503272 is about 8860.2072210530. The cubic root of 78503272 is about 428.1828345120.

The spelling of 78503272 in words is "seventy-eight million, five hundred three thousand, two hundred seventy-two".