28621044 has 36 divisors (see below), whose sum is σ = 72552480. Its totient is φ = 9513360.

The previous prime is 28621027. The next prime is 28621063. The reversal of 28621044 is 44012682.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 28620999 and 28621017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14899 + ... + 16709.

Almost surely, 2^28621044 is an apocalyptic number.

It is an amenable number.

28621044 is an abundant number, since it is smaller than the sum of its proper divisors (43931436).

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

28621044 is a wasteful number, since it uses less digits than its factorization.

28621044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28621044 is about 5349.8639235031. The cubic root of 28621044 is about 305.8875660238.

The spelling of 28621044 in words is "twenty-eight million, six hundred twenty-one thousand, forty-four".