28944612 has 18 divisors (see below), whose sum is σ = 73165638. Its totient is φ = 9648192.

The previous prime is 28944589. The next prime is 28944631. The reversal of 28944612 is 21644982.

It can be written as a sum of positive squares in only one way, i.e., 18870336 + 10074276 = 4344^2 + 3174^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 804017 = 28944612 / (2 + 8 + 9 + 4 + 4 + 6 + 1 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 401973 + ... + 402044.

Almost surely, 2^28944612 is an apocalyptic number.

It is an amenable number.

28944612 is an abundant number, since it is smaller than the sum of its proper divisors (44221026).

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

28944612 is a wasteful number, since it uses less digits than its factorization.

28944612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804027 (or 804022 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28944612 is about 5380.0197025662. The cubic root of 28944612 is about 307.0359608022.

The spelling of 28944612 in words is "twenty-eight million, nine hundred forty-four thousand, six hundred twelve".