28525994 has 16 divisors (see below), whose sum is σ = 49154688. Its totient is φ = 12162192.

The previous prime is 28525993. The next prime is 28526023. The reversal of 28525994 is 49952582.

It is not an unprimeable number, because it can be changed into a prime (28525993) 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 7 ways as a sum of consecutive naturals, for example, 2414 + ... + 7929.

It is an arithmetic number, because the mean of its divisors is an integer number (3072168).

Almost surely, 2^28525994 is an apocalyptic number.

28525994 is a deficient number, since it is larger than the sum of its proper divisors (20628694).

28525994 is a wasteful number, since it uses less digits than its factorization.

28525994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549.

The product of its digits is 259200, while the sum is 44.

The square root of 28525994 is about 5340.9731323046. The cubic root of 28525994 is about 305.5485746847.

The spelling of 28525994 in words is "twenty-eight million, five hundred twenty-five thousand, nine hundred ninety-four".