28132574 has 8 divisors (see below), whose sum is σ = 42232368. Its totient is φ = 14055120.

The previous prime is 28132571. The next prime is 28132579. The reversal of 28132574 is 47523182.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28132574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132571) 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, 1967 + ... + 7754.

It is an arithmetic number, because the mean of its divisors is an integer number (5279046).

Almost surely, 2^28132574 is an apocalyptic number.

28132574 is a deficient number, since it is larger than the sum of its proper divisors (14099794).

28132574 is a wasteful number, since it uses less digits than its factorization.

28132574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11170.

The product of its digits is 13440, while the sum is 32.

The square root of 28132574 is about 5304.0148943984. The cubic root of 28132574 is about 304.1373960532.

The spelling of 28132574 in words is "twenty-eight million, one hundred thirty-two thousand, five hundred seventy-four".