28675944 has 128 divisors (see below), whose sum is σ = 88560000. Its totient is φ = 8631360.

The previous prime is 28675943. The next prime is 28675967. The reversal of 28675944 is 44957682.

It is a happy number.

It is a super-2 number, since 2×28675944² = 1644619528582272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28675944.

It is not an unprimeable number, because it can be changed into a prime (28675943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192382 + ... + 192530.

It is an arithmetic number, because the mean of its divisors is an integer number (691875).

Almost surely, 2^28675944 is an apocalyptic number.

28675944 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 28675944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44280000).

28675944 is an abundant number, since it is smaller than the sum of its proper divisors (59884056).

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

28675944 is a wasteful number, since it uses less digits than its factorization.

28675944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 165 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 28675944 is about 5354.9924369694. The cubic root of 28675944 is about 306.0830224554.

The spelling of 28675944 in words is "twenty-eight million, six hundred seventy-five thousand, nine hundred forty-four".