78272 has 14 divisors (see below), whose sum is σ = 155448. Its totient is φ = 39104.

The previous prime is 78259. The next prime is 78277. The reversal of 78272 is 27287.

It is a super-2 number, since 2×78272² = 12253011968, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78277) by changing a digit.

78272 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548 + ... + 675.

2⁷⁸²⁷² is an apocalyptic number.

It is an amenable number.

78272 is a deficient number, since it is larger than the sum of its proper divisors (77176).

78272 is a wasteful number, since it uses less digits than its factorization.

78272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1225 counting only the distinct ones).

The product of its digits is 1568, while the sum is 26.

The square root of 78272 is about 279.7713352007. The cubic root of 78272 is about 42.7761942906.

The spelling of 78272 in words is "seventy-eight thousand, two hundred seventy-two".