28994512 has 10 divisors (see below), whose sum is σ = 56176898. Its totient is φ = 14497248.

The previous prime is 28994507. The next prime is 28994527. The reversal of 28994512 is 21549982.

It can be written as a sum of positive squares in only one way, i.e., 28987456 + 7056 = 5384^2 + 84^2 .

It is a super-2 number, since 2×28994512² = 1681363452236288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906063 + ... + 906094.

Almost surely, 2^28994512 is an apocalyptic number.

It is an amenable number.

28994512 is a deficient number, since it is larger than the sum of its proper divisors (27182386).

28994512 is a wasteful number, since it uses less digits than its factorization.

28994512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812165 (or 1812159 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 28994512 is about 5384.6552350174. The cubic root of 28994512 is about 307.2123010301.

The spelling of 28994512 in words is "twenty-eight million, nine hundred ninety-four thousand, five hundred twelve".