72898636 has 6 divisors (see below), whose sum is σ = 127572620. Its totient is φ = 36449316.

The previous prime is 72898627. The next prime is 72898667. The reversal of 72898636 is 63689827.

It is a super-2 number, since 2×72898636² = 10628422261320992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72898636.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9112326 + ... + 9112333.

Almost surely, 2^72898636 is an apocalyptic number.

It is an amenable number.

72898636 is a deficient number, since it is larger than the sum of its proper divisors (54673984).

72898636 is a wasteful number, since it uses less digits than its factorization.

72898636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18224663 (or 18224661 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 72898636 is about 8538.0698052897. The cubic root of 72898636 is about 417.7403896068.

The spelling of 72898636 in words is "seventy-two million, eight hundred ninety-eight thousand, six hundred thirty-six".