72969776 has 30 divisors (see below), whose sum is σ = 155404116. Its totient is φ = 33167200.

The previous prime is 72969769. The next prime is 72969781. The reversal of 72969776 is 67796927.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16910 + ... + 20781.

Almost surely, 2^72969776 is an apocalyptic number.

It is an amenable number.

72969776 is an abundant number, since it is smaller than the sum of its proper divisors (82434340).

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

72969776 is a wasteful number, since it uses less digits than its factorization.

72969776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37721 (or 37704 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 53.

The square root of 72969776 is about 8542.2348363880. The cubic root of 72969776 is about 417.8762329784.

The spelling of 72969776 in words is "seventy-two million, nine hundred sixty-nine thousand, seven hundred seventy-six".