28232574 has 8 divisors (see below), whose sum is σ = 56465160. Its totient is φ = 9410856.

The previous prime is 28232557. The next prime is 28232579. The reversal of 28232574 is 47523282.

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

28232574 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28232579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352709 + ... + 2352720.

It is an arithmetic number, because the mean of its divisors is an integer number (7058145).

Almost surely, 2^28232574 is an apocalyptic number.

28232574 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28232574 is a wasteful number, since it uses less digits than its factorization.

28232574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4705434.

The product of its digits is 26880, while the sum is 33.

The square root of 28232574 is about 5313.4333533037. The cubic root of 28232574 is about 304.4973320050.

The spelling of 28232574 in words is "twenty-eight million, two hundred thirty-two thousand, five hundred seventy-four".