72467272 has 8 divisors (see below), whose sum is σ = 135876150. Its totient is φ = 36233632.

The previous prime is 72467261. The next prime is 72467287. The reversal of 72467272 is 27276427.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 24940036 = 6894^2 + 4994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×72467272² = 10503011022243968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4529197 + ... + 4529212.

Almost surely, 2^72467272 is an apocalyptic number.

It is an amenable number.

72467272 is a deficient number, since it is larger than the sum of its proper divisors (63408878).

72467272 is a wasteful number, since it uses less digits than its factorization.

72467272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9058415 (or 9058411 counting only the distinct ones).

The product of its digits is 65856, while the sum is 37.

The square root of 72467272 is about 8512.7711116886. The cubic root of 72467272 is about 416.9147922293.

The spelling of 72467272 in words is "seventy-two million, four hundred sixty-seven thousand, two hundred seventy-two".