28892642 has 16 divisors (see below), whose sum is σ = 45144000. Its totient is φ = 13851600.

The previous prime is 28892641. The next prime is 28892653. The reversal of 28892642 is 24629882.

It is a self number, because there is not a number n which added to its sum of digits gives 28892642.

It is not an unprimeable number, because it can be changed into a prime (28892641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7109 + ... + 10407.

It is an arithmetic number, because the mean of its divisors is an integer number (2821500).

Almost surely, 2^28892642 is an apocalyptic number.

28892642 is a deficient number, since it is larger than the sum of its proper divisors (16251358).

28892642 is a wasteful number, since it uses less digits than its factorization.

28892642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481.

The product of its digits is 110592, while the sum is 41.

The square root of 28892642 is about 5375.1876246323. The cubic root of 28892642 is about 306.8520898688.

The spelling of 28892642 in words is "twenty-eight million, eight hundred ninety-two thousand, six hundred forty-two".