28792449 has 32 divisors (see below), whose sum is σ = 49760000. Its totient is φ = 16447536.

The previous prime is 28792433. The next prime is 28792457. The reversal of 28792449 is 94429782.

It is not a de Polignac number, because 28792449 - 2⁴ = 28792433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28792349) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7707 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (1555000).

Almost surely, 2^28792449 is an apocalyptic number.

It is an amenable number.

28792449 is a deficient number, since it is larger than the sum of its proper divisors (20967551).

28792449 is an equidigital number, since it uses as much as digits as its factorization.

28792449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3119 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28792449 is about 5365.8595769923. The cubic root of 28792449 is about 306.4969817153.

It can be divided in two parts, 28792 and 449, that added together give a square (29241 = 171²).

The spelling of 28792449 in words is "twenty-eight million, seven hundred ninety-two thousand, four hundred forty-nine".