28392651 has 12 divisors (see below), whose sum is σ = 46870512. Its totient is φ = 16224336.

The previous prime is 28392641. The next prime is 28392659. The reversal of 28392651 is 15629382.

It is not a de Polignac number, because 28392651 - 2⁵ = 28392619 is a prime.

It is a super-2 number, since 2×28392651² = 1612285261615602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28392659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225276 + ... + 225401.

It is an arithmetic number, because the mean of its divisors is an integer number (3905876).

Almost surely, 2^28392651 is an apocalyptic number.

28392651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28392651 is a deficient number, since it is larger than the sum of its proper divisors (18477861).

28392651 is a wasteful number, since it uses less digits than its factorization.

28392651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450690 (or 450687 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28392651 is about 5328.4754855399. The cubic root of 28392651 is about 305.0717416116.

The spelling of 28392651 in words is "twenty-eight million, three hundred ninety-two thousand, six hundred fifty-one".