28925844 has 24 divisors (see below), whose sum is σ = 67838400. Its totient is φ = 9592704.

The previous prime is 28925833. The next prime is 28925849. The reversal of 28925844 is 44852982.

It is a super-2 number, since 2×28925844² = 1673408902224672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28925796 and 28925805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28925849) 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, 3669 + ... + 8444.

It is an arithmetic number, because the mean of its divisors is an integer number (2826600).

Almost surely, 2^28925844 is an apocalyptic number.

It is an amenable number.

28925844 is an abundant number, since it is smaller than the sum of its proper divisors (38912556).

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

28925844 is a wasteful number, since it uses less digits than its factorization.

28925844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12319 (or 12317 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 28925844 is about 5378.2751881993. The cubic root of 28925844 is about 306.9695846393.

The spelling of 28925844 in words is "twenty-eight million, nine hundred twenty-five thousand, eight hundred forty-four".