28425936 has 80 divisors (see below), whose sum is σ = 91565568. Its totient is φ = 7382400.

The previous prime is 28425883. The next prime is 28425959. The reversal of 28425936 is 63952482.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28425894 and 28425903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150 + ... + 7541.

Almost surely, 2^28425936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28425936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45782784).

28425936 is an abundant number, since it is smaller than the sum of its proper divisors (63139632).

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

28425936 is a wasteful number, since it uses less digits than its factorization.

28425936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720 (or 7714 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 28425936 is about 5331.5978843120. The cubic root of 28425936 is about 305.1909079820.

It can be divided in two parts, 2842 and 5936, that added together give a palindrome (8778).

The spelling of 28425936 in words is "twenty-eight million, four hundred twenty-five thousand, nine hundred thirty-six".