28524642 has 8 divisors (see below), whose sum is σ = 57049296. Its totient is φ = 9508212.

The previous prime is 28524641. The next prime is 28524649. The reversal of 28524642 is 24642582.

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

28524642 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28524641) 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, 2377048 + ... + 2377059.

It is an arithmetic number, because the mean of its divisors is an integer number (7131162).

Almost surely, 2^28524642 is an apocalyptic number.

28524642 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.

28524642 is a wasteful number, since it uses less digits than its factorization.

28524642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754112.

The product of its digits is 30720, while the sum is 33.

The square root of 28524642 is about 5340.8465621098. The cubic root of 28524642 is about 305.5437474127.

It can be divided in two parts, 2852464 and 2, that added together give a triangular number (2852466 = T₂₃₈₈).

The spelling of 28524642 in words is "twenty-eight million, five hundred twenty-four thousand, six hundred forty-two".