28610642 has 8 divisors (see below), whose sum is σ = 43016832. Its totient is φ = 14271700.

The previous prime is 28610641. The next prime is 28610651. The reversal of 28610642 is 24601682.

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

It is not an unprimeable number, because it can be changed into a prime (28610641) 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, 15734 + ... + 17457.

It is an arithmetic number, because the mean of its divisors is an integer number (5377104).

Almost surely, 2^28610642 is an apocalyptic number.

28610642 is a deficient number, since it is larger than the sum of its proper divisors (14406190).

28610642 is a wasteful number, since it uses less digits than its factorization.

28610642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33624.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28610642 is about 5348.8916608957. The cubic root of 28610642 is about 305.8505043894.

The spelling of 28610642 in words is "twenty-eight million, six hundred ten thousand, six hundred forty-two".