28598730 has 32 divisors (see below), whose sum is σ = 70314048. Its totient is φ = 7440000.

The previous prime is 28598707. The next prime is 28598737. The reversal of 28598730 is 3789582.

It is a super-2 number, since 2×28598730² = 1635774715225800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28598737) 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, 10396 + ... + 12855.

It is an arithmetic number, because the mean of its divisors is an integer number (2197314).

Almost surely, 2^28598730 is an apocalyptic number.

28598730 is an abundant number, since it is smaller than the sum of its proper divisors (41715318).

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

28598730 is a wasteful number, since it uses less digits than its factorization.

28598730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23302.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 28598730 is about 5347.7780432625. The cubic root of 28598730 is about 305.8080516900.

The spelling of 28598730 in words is "twenty-eight million, five hundred ninety-eight thousand, seven hundred thirty".