28392052 has 12 divisors (see below), whose sum is σ = 53508196. Its totient is φ = 13104000.

The previous prime is 28392031. The next prime is 28392071. The reversal of 28392052 is 25029382.

It can be written as a sum of positive squares in 2 ways, for example, as 16859236 + 11532816 = 4106^2 + 3396^2 .

It is a super-2 number, since 2×28392052² = 1612217233541408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272949 + ... + 273052.

Almost surely, 2^28392052 is an apocalyptic number.

It is an amenable number.

28392052 is a deficient number, since it is larger than the sum of its proper divisors (25116144).

28392052 is a wasteful number, since it uses less digits than its factorization.

28392052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546018 (or 546016 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28392052 is about 5328.4192777971. The cubic root of 28392052 is about 305.0695962295.

The spelling of 28392052 in words is "twenty-eight million, three hundred ninety-two thousand, fifty-two".