94628721 has 32 divisors (see below), whose sum is σ = 148838400. Its totient is φ = 52850880.

The previous prime is 94628707. The next prime is 94628731. The reversal of 94628721 is 12782649.

It is not a de Polignac number, because 94628721 - 2⁵ = 94628689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94628721.

It is not an unprimeable number, because it can be changed into a prime (94628701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21160 + ... + 25238.

It is an arithmetic number, because the mean of its divisors is an integer number (4651200).

Almost surely, 2^94628721 is an apocalyptic number.

It is an amenable number.

94628721 is a deficient number, since it is larger than the sum of its proper divisors (54209679).

94628721 is a wasteful number, since it uses less digits than its factorization.

94628721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149.

The product of its digits is 48384, while the sum is 39.

The square root of 94628721 is about 9727.7294884264. The cubic root of 94628721 is about 455.6950629403.

The spelling of 94628721 in words is "ninety-four million, six hundred twenty-eight thousand, seven hundred twenty-one".