28902974 has 16 divisors (see below), whose sum is σ = 44945280. Its totient is φ = 13925280.

The previous prime is 28902961. The next prime is 28902977. The reversal of 28902974 is 47920982.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28902977) 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, 15812 + ... + 17544.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^28902974 is an apocalyptic number.

28902974 is a deficient number, since it is larger than the sum of its proper divisors (16042306).

28902974 is a wasteful number, since it uses less digits than its factorization.

28902974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 28902974 is about 5376.1486214576. The cubic root of 28902974 is about 306.8886622478. Note that the first 3 decimals are identical.

The spelling of 28902974 in words is "twenty-eight million, nine hundred two thousand, nine hundred seventy-four".