28597407 has 16 divisors (see below), whose sum is σ = 39521280. Its totient is φ = 18374400.

The previous prime is 28597399. The next prime is 28597423. The reversal of 28597407 is 70479582.

It is not a de Polignac number, because 28597407 - 2³ = 28597399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28597427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30319 + ... + 31247.

It is an arithmetic number, because the mean of its divisors is an integer number (2470080).

Almost surely, 2^28597407 is an apocalyptic number.

28597407 is a deficient number, since it is larger than the sum of its proper divisors (10923873).

28597407 is a wasteful number, since it uses less digits than its factorization.

28597407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 28597407 is about 5347.6543455986. The cubic root of 28597407 is about 305.8033359761.

The spelling of 28597407 in words is "twenty-eight million, five hundred ninety-seven thousand, four hundred seven".