28392464 has 10 divisors (see below), whose sum is σ = 55010430. Its totient is φ = 14196224.

The previous prime is 28392457. The next prime is 28392467. The reversal of 28392464 is 46429382.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25080064 + 3312400 = 5008^2 + 1820^2 .

It is a super-2 number, since 2×28392464² = 1612264023982592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28392467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 887249 + ... + 887280.

It is an arithmetic number, because the mean of its divisors is an integer number (5501043).

Almost surely, 2^28392464 is an apocalyptic number.

It is an amenable number.

28392464 is a deficient number, since it is larger than the sum of its proper divisors (26617966).

28392464 is a wasteful number, since it uses less digits than its factorization.

28392464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774537 (or 1774531 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 28392464 is about 5328.4579382782. The cubic root of 28392464 is about 305.0710718545.

The spelling of 28392464 in words is "twenty-eight million, three hundred ninety-two thousand, four hundred sixty-four".