28949994 has 16 divisors (see below), whose sum is σ = 64333440. Its totient is φ = 9649980.

The previous prime is 28949971. The next prime is 28950007. The reversal of 28949994 is 49994982.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 536111 = 28949994 / (2 + 8 + 9 + 4 + 9 + 9 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 28949994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268002 + ... + 268109.

It is an arithmetic number, because the mean of its divisors is an integer number (4020840).

Almost surely, 2^28949994 is an apocalyptic number.

28949994 is an abundant number, since it is smaller than the sum of its proper divisors (35383446).

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

28949994 is a wasteful number, since it uses less digits than its factorization.

28949994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536122 (or 536116 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 28949994 is about 5380.5198633589. The cubic root of 28949994 is about 307.0549898490.

The spelling of 28949994 in words is "twenty-eight million, nine hundred forty-nine thousand, nine hundred ninety-four".