28940996 has 24 divisors (see below), whose sum is σ = 58679040. Its totient is φ = 12232512.

The previous prime is 28940983. The next prime is 28940999. The reversal of 28940996 is 69904982.

It is a self number, because there is not a number n which added to its sum of digits gives 28940996.

It is not an unprimeable number, because it can be changed into a prime (28940999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5036 + ... + 9123.

It is an arithmetic number, because the mean of its divisors is an integer number (2444960).

Almost surely, 2^28940996 is an apocalyptic number.

It is an amenable number.

28940996 is an abundant number, since it is smaller than the sum of its proper divisors (29738044).

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

28940996 is a wasteful number, since it uses less digits than its factorization.

28940996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243 (or 14241 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 28940996 is about 5379.6836338209. The cubic root of 28940996 is about 307.0231744470.

The spelling of 28940996 in words is "twenty-eight million, nine hundred forty thousand, nine hundred ninety-six".