72894628 has 6 divisors (see below), whose sum is σ = 127565606. Its totient is φ = 36447312.

The previous prime is 72894617. The next prime is 72894631. The reversal of 72894628 is 82649827.

It can be written as a sum of positive squares in only one way, i.e., 41062464 + 31832164 = 6408^2 + 5642^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9111825 + ... + 9111832.

Almost surely, 2^72894628 is an apocalyptic number.

It is an amenable number.

72894628 is a deficient number, since it is larger than the sum of its proper divisors (54670978).

72894628 is a wasteful number, since it uses less digits than its factorization.

72894628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18223661 (or 18223659 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 72894628 is about 8537.8350885924. The cubic root of 72894628 is about 417.7327336146.

The spelling of 72894628 in words is "seventy-two million, eight hundred ninety-four thousand, six hundred twenty-eight".