72264136 has 16 divisors (see below), whose sum is σ = 154851840. Its totient is φ = 30970320.

The previous prime is 72264133. The next prime is 72264139. The reversal of 72264136 is 63146227.

It is an interprime number because it is at equal distance from previous prime (72264133) and next prime (72264139).

It is a junction number, because it is equal to n+sod(n) for n = 72264098 and 72264107.

It is not an unprimeable number, because it can be changed into a prime (72264133) 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, 645160 + ... + 645271.

It is an arithmetic number, because the mean of its divisors is an integer number (9678240).

Almost surely, 2^72264136 is an apocalyptic number.

It is an amenable number.

72264136 is an abundant number, since it is smaller than the sum of its proper divisors (82587704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72264136 is a wasteful number, since it uses less digits than its factorization.

72264136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290444 (or 1290440 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 72264136 is about 8500.8314887427. The cubic root of 72264136 is about 416.5248706486.

The spelling of 72264136 in words is "seventy-two million, two hundred sixty-four thousand, one hundred thirty-six".