28969556 has 24 divisors (see below), whose sum is σ = 63206976. Its totient is φ = 11286720.

The previous prime is 28969553. The next prime is 28969583. The reversal of 28969556 is 65596982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28969553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46721 + ... + 47336.

It is an arithmetic number, because the mean of its divisors is an integer number (2633624).

Almost surely, 2^28969556 is an apocalyptic number.

It is an amenable number.

28969556 is an abundant number, since it is smaller than the sum of its proper divisors (34237420).

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

28969556 is a wasteful number, since it uses less digits than its factorization.

28969556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94079 (or 94077 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The square root of 28969556 is about 5382.3374104565. The cubic root of 28969556 is about 307.1241350251.

The spelling of 28969556 in words is "twenty-eight million, nine hundred sixty-nine thousand, five hundred fifty-six".