28322590 has 8 divisors (see below), whose sum is σ = 50980680. Its totient is φ = 11329032.

The previous prime is 28322573. The next prime is 28322599. The reversal of 28322590 is 9522382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28322599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416120 + ... + 1416139.

It is an arithmetic number, because the mean of its divisors is an integer number (6372585).

Almost surely, 2^28322590 is an apocalyptic number.

28322590 is a deficient number, since it is larger than the sum of its proper divisors (22658090).

28322590 is a wasteful number, since it uses less digits than its factorization.

28322590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832266.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28322590 is about 5321.8972180981. The cubic root of 28322590 is about 304.8206057833.

The spelling of 28322590 in words is "twenty-eight million, three hundred twenty-two thousand, five hundred ninety".