28087044 has 12 divisors (see below), whose sum is σ = 65536464. Its totient is φ = 9362344.

The previous prime is 28087021. The next prime is 28087049. The reversal of 28087044 is 44078082.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 28086996 and 28087014.

It is not an unprimeable number, because it can be changed into a prime (28087049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170282 + ... + 1170305.

It is an arithmetic number, because the mean of its divisors is an integer number (5461372).

Almost surely, 2^28087044 is an apocalyptic number.

It is an amenable number.

28087044 is an abundant number, since it is smaller than the sum of its proper divisors (37449420).

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

28087044 is a wasteful number, since it uses less digits than its factorization.

28087044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340594 (or 2340592 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 28087044 is about 5299.7211247385. The cubic root of 28087044 is about 303.9732346011.

The spelling of 28087044 in words is "twenty-eight million, eighty-seven thousand, forty-four".