28444032 has 48 divisors (see below), whose sum is σ = 81853980. Its totient is φ = 9480960.

The previous prime is 28444001. The next prime is 28444033. The reversal of 28444032 is 23044482.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28443987 and 28444005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28444033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11194 + ... + 13497.

Almost surely, 2^28444032 is an apocalyptic number.

It is an amenable number.

28444032 is an abundant number, since it is smaller than the sum of its proper divisors (53409948).

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

28444032 is a wasteful number, since it uses less digits than its factorization.

28444032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24711 (or 24696 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 28444032 is about 5333.2946665265. The cubic root of 28444032 is about 305.2556559310.

The spelling of 28444032 in words is "twenty-eight million, four hundred forty-four thousand, thirty-two".