28611416 has 24 divisors (see below), whose sum is σ = 56624220. Its totient is φ = 13551408.

The previous prime is 28611409. The next prime is 28611421. The reversal of 28611416 is 61411682.

It is a super-2 number, since 2×28611416² = 1637226251050112, 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 in 5 ways as a sum of consecutive naturals, for example, 2066 + ... + 7841.

Almost surely, 2^28611416 is an apocalyptic number.

It is an amenable number.

28611416 is a deficient number, since it is larger than the sum of its proper divisors (28012804).

28611416 is a wasteful number, since it uses less digits than its factorization.

28611416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9951 (or 9928 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 28611416 is about 5348.9640118438. The cubic root of 28611416 is about 305.8532624092.

The spelling of 28611416 in words is "twenty-eight million, six hundred eleven thousand, four hundred sixteen".