28360944 has 60 divisors (see below), whose sum is σ = 81531736. Its totient is φ = 9196416.

The previous prime is 28360933. The next prime is 28360973. The reversal of 28360944 is 44906382.

It is a happy number.

28360944 is a `hidden beast` number, since 2 + 8 + 3 + 609 + 44 = 666.

It is a super-2 number, since 2×28360944² = 1608686289142272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28360899 and 28360908.

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, 2667 + ... + 7989.

Almost surely, 2^28360944 is an apocalyptic number.

28360944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28360944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40765868).

28360944 is an abundant number, since it is smaller than the sum of its proper divisors (53170792).

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

28360944 is a wasteful number, since it uses less digits than its factorization.

28360944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374 (or 5365 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28360944 is about 5325.4994132006. The cubic root of 28360944 is about 304.9581381228.

The spelling of 28360944 in words is "twenty-eight million, three hundred sixty thousand, nine hundred forty-four".