28152590 has 8 divisors (see below), whose sum is σ = 50674680. Its totient is φ = 11261032.

The previous prime is 28152587. The next prime is 28152599. The reversal of 28152590 is 9525182.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407620 + ... + 1407639.

It is an arithmetic number, because the mean of its divisors is an integer number (6334335).

Almost surely, 2^28152590 is an apocalyptic number.

28152590 is a deficient number, since it is larger than the sum of its proper divisors (22522090).

28152590 is a wasteful number, since it uses less digits than its factorization.

28152590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815266.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 28152590 is about 5305.9014314252. The cubic root of 28152590 is about 304.2095090296.

The spelling of 28152590 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred ninety".