28969404 has 12 divisors (see below), whose sum is σ = 67595304. Its totient is φ = 9656464.

The previous prime is 28969403. The next prime is 28969427. The reversal of 28969404 is 40496982.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1207047 + ... + 1207070.

It is an arithmetic number, because the mean of its divisors is an integer number (5632942).

Almost surely, 2^28969404 is an apocalyptic number.

It is an amenable number.

28969404 is an abundant number, since it is smaller than the sum of its proper divisors (38625900).

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

28969404 is a wasteful number, since it uses less digits than its factorization.

28969404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414124 (or 2414122 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 28969404 is about 5382.3232901787. The cubic root of 28969404 is about 307.1235978755.

The spelling of 28969404 in words is "twenty-eight million, nine hundred sixty-nine thousand, four hundred four".