28949956 has 12 divisors (see below), whose sum is σ = 57899968. Its totient is φ = 12407112.

The previous prime is 28949953. The next prime is 28949957. The reversal of 28949956 is 65994982.

28949956 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28949953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516936 + ... + 516991.

Almost surely, 2^28949956 is an apocalyptic number.

It is an amenable number.

28949956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28949956 is a wasteful number, since it uses less digits than its factorization.

28949956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033938 (or 1033936 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 28949956 is about 5380.5163321005. The cubic root of 28949956 is about 307.0548555013.

The spelling of 28949956 in words is "twenty-eight million, nine hundred forty-nine thousand, nine hundred fifty-six".