28425597 has 16 divisors (see below), whose sum is σ = 39354240. Its totient is φ = 18228672.

The previous prime is 28425569. The next prime is 28425601. The reversal of 28425597 is 79552482.

It is a de Polignac number, because none of the positive numbers 2^k-28425597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28425517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34128 + ... + 34950.

It is an arithmetic number, because the mean of its divisors is an integer number (2459640).

Almost surely, 2^28425597 is an apocalyptic number.

It is an amenable number.

28425597 is a deficient number, since it is larger than the sum of its proper divisors (10928643).

28425597 is a wasteful number, since it uses less digits than its factorization.

28425597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its digits is 201600, while the sum is 42.

The square root of 28425597 is about 5331.5660926223. The cubic root of 28425597 is about 305.1896947692.

The spelling of 28425597 in words is "twenty-eight million, four hundred twenty-five thousand, five hundred ninety-seven".