28650642 has 16 divisors (see below), whose sum is σ = 58634400. Its totient is φ = 9328032.

The previous prime is 28650631. The next prime is 28650653. The reversal of 28650642 is 24605682.

It is an interprime number because it is at equal distance from previous prime (28650631) and next prime (28650653).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55267 + ... + 55782.

It is an arithmetic number, because the mean of its divisors is an integer number (3664650).

Almost surely, 2^28650642 is an apocalyptic number.

28650642 is an abundant number, since it is smaller than the sum of its proper divisors (29983758).

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

28650642 is a wasteful number, since it uses less digits than its factorization.

28650642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111097.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 28650642 is about 5352.6294472904. The cubic root of 28650642 is about 305.9929726269.

It can be divided in two parts, 28650 and 642, that added together give a palindrome (29292).

The spelling of 28650642 in words is "twenty-eight million, six hundred fifty thousand, six hundred forty-two".