72488647 has 16 divisors (see below), whose sum is σ = 90669312. Its totient is φ = 56301120.

The previous prime is 72488623. The next prime is 72488651. The reversal of 72488647 is 74688427.

It is a cyclic number.

It is not a de Polignac number, because 72488647 - 2⁷ = 72488519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72488597 and 72488606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72488747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25363 + ... + 28075.

It is an arithmetic number, because the mean of its divisors is an integer number (5666832).

Almost surely, 2^72488647 is an apocalyptic number.

72488647 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

72488647 is a deficient number, since it is larger than the sum of its proper divisors (18180665).

72488647 is a wasteful number, since it uses less digits than its factorization.

72488647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078.

The product of its digits is 602112, while the sum is 46.

The square root of 72488647 is about 8514.0264857469. The cubic root of 72488647 is about 416.9557793646.

The spelling of 72488647 in words is "seventy-two million, four hundred eighty-eight thousand, six hundred forty-seven".