72747672 has 32 divisors (see below), whose sum is σ = 183750000. Its totient is φ = 23998464.

The previous prime is 72747671. The next prime is 72747673. The reversal of 72747672 is 27674727.

It is an interprime number because it is at equal distance from previous prime (72747671) and next prime (72747673).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72747671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13297 + ... + 17952.

Almost surely, 2^72747672 is an apocalyptic number.

It is an amenable number.

72747672 is an abundant number, since it is smaller than the sum of its proper divisors (111002328).

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

72747672 is a wasteful number, since it uses less digits than its factorization.

72747672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31355 (or 31351 counting only the distinct ones).

The product of its digits is 230496, while the sum is 42.

The square root of 72747672 is about 8529.2245837473. The cubic root of 72747672 is about 417.4518275422.

The spelling of 72747672 in words is "seventy-two million, seven hundred forty-seven thousand, six hundred seventy-two".