44521428 has 24 divisors (see below), whose sum is σ = 118724032. Its totient is φ = 12720384.

The previous prime is 44521423. The next prime is 44521457. The reversal of 44521428 is 82412544.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 44521395 and 44521404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44521423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264925 + ... + 265092.

Almost surely, 2^44521428 is an apocalyptic number.

It is an amenable number.

44521428 is an abundant number, since it is smaller than the sum of its proper divisors (74202604).

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

44521428 is a wasteful number, since it uses less digits than its factorization.

44521428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530031 (or 530029 counting only the distinct ones).

The product of its digits is 10240, while the sum is 30.

The square root of 44521428 is about 6672.4379352677. The cubic root of 44521428 is about 354.4239231779.

The spelling of 44521428 in words is "forty-four million, five hundred twenty-one thousand, four hundred twenty-eight".