28373597 has 6 divisors (see below), whose sum is σ = 33006078. Its totient is φ = 24320184.

The previous prime is 28373563. The next prime is 28373617. The reversal of 28373597 is 79537382.

It can be written as a sum of positive squares in only one way, i.e., 28153636 + 219961 = 5306^2 + 469^2 .

It is not a de Polignac number, because 28373597 - 2⁸ = 28373341 is a prime.

It is a super-2 number, since 2×28373597² = 1610122013436818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28373537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289478 + ... + 289575.

It is an arithmetic number, because the mean of its divisors is an integer number (5501013).

Almost surely, 2^28373597 is an apocalyptic number.

It is an amenable number.

28373597 is a deficient number, since it is larger than the sum of its proper divisors (4632481).

28373597 is an equidigital number, since it uses as much as digits as its factorization.

28373597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579067 (or 579060 counting only the distinct ones).

The product of its digits is 317520, while the sum is 44.

The square root of 28373597 is about 5326.6872444325. The cubic root of 28373597 is about 305.0034828949.

The spelling of 28373597 in words is "twenty-eight million, three hundred seventy-three thousand, five hundred ninety-seven".