28632642 has 8 divisors (see below), whose sum is σ = 57265296. Its totient is φ = 9544212.

The previous prime is 28632587. The next prime is 28632647. The reversal of 28632642 is 24623682.

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

28632642 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 (28632647) 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, 2386048 + ... + 2386059.

It is an arithmetic number, because the mean of its divisors is an integer number (7158162).

Almost surely, 2^28632642 is an apocalyptic number.

28632642 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.

28632642 is a wasteful number, since it uses less digits than its factorization.

28632642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772112.

The product of its digits is 27648, while the sum is 33.

The square root of 28632642 is about 5350.9477665176. The cubic root of 28632642 is about 305.9288783404.

The spelling of 28632642 in words is "twenty-eight million, six hundred thirty-two thousand, six hundred forty-two".