28625782 has 16 divisors (see below), whose sum is σ = 44035920. Its totient is φ = 13951872.

The previous prime is 28625759. The next prime is 28625783. The reversal of 28625782 is 28752682.

It is a super-2 number, since 2×28625782² = 1638870790223048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28625783) 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, 11893 + ... + 14095.

It is an arithmetic number, because the mean of its divisors is an integer number (2752245).

Almost surely, 2^28625782 is an apocalyptic number.

28625782 is a deficient number, since it is larger than the sum of its proper divisors (15410138).

28625782 is a wasteful number, since it uses less digits than its factorization.

28625782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367.

The product of its digits is 107520, while the sum is 40.

The square root of 28625782 is about 5350.3067201797. The cubic root of 28625782 is about 305.9044442262.

The spelling of 28625782 in words is "twenty-eight million, six hundred twenty-five thousand, seven hundred eighty-two".