28700590 has 24 divisors (see below), whose sum is σ = 54884232. Its totient is φ = 10803840.

The previous prime is 28700569. The next prime is 28700593. The reversal of 28700590 is 9500782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28700593) 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, 2076 + ... + 7855.

It is an arithmetic number, because the mean of its divisors is an integer number (2286843).

Almost surely, 2^28700590 is an apocalyptic number.

28700590 is a deficient number, since it is larger than the sum of its proper divisors (26183642).

28700590 is a wasteful number, since it uses less digits than its factorization.

28700590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9972 (or 9955 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 28700590 is about 5357.2931597963. The cubic root of 28700590 is about 306.1706866664.

The spelling of 28700590 in words is "twenty-eight million, seven hundred thousand, five hundred ninety".