28597870 has 24 divisors (see below), whose sum is σ = 59881464. Its totient is φ = 9804816.

The previous prime is 28597867. The next prime is 28597873. The reversal of 28597870 is 7879582.

It is an interprime number because it is at equal distance from previous prime (28597867) and next prime (28597873).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28597870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28597873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28692 + ... + 29671.

It is an arithmetic number, because the mean of its divisors is an integer number (2495061).

Almost surely, 2^28597870 is an apocalyptic number.

28597870 is an abundant number, since it is smaller than the sum of its proper divisors (31283594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28597870 is a wasteful number, since it uses less digits than its factorization.

28597870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58384 (or 58377 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 28597870 is about 5347.6976354315. The cubic root of 28597870 is about 305.8049863143.

The spelling of 28597870 in words is "twenty-eight million, five hundred ninety-seven thousand, eight hundred seventy".