28969402 has 32 divisors (see below), whose sum is σ = 54440064. Its totient is φ = 11232000.

The previous prime is 28969387. The next prime is 28969403. The reversal of 28969402 is 20496982.

It is not an unprimeable number, because it can be changed into a prime (28969403) 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 15 ways as a sum of consecutive naturals, for example, 47902 + ... + 48502.

It is an arithmetic number, because the mean of its divisors is an integer number (1701252).

Almost surely, 2^28969402 is an apocalyptic number.

28969402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28969402 is a deficient number, since it is larger than the sum of its proper divisors (25470662).

28969402 is a wasteful number, since it uses less digits than its factorization.

28969402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28969402 is about 5382.3231043853. The cubic root of 28969402 is about 307.1235908078.

The spelling of 28969402 in words is "twenty-eight million, nine hundred sixty-nine thousand, four hundred two".