28425012 has 48 divisors (see below), whose sum is σ = 82693632. Its totient is φ = 7382880.

The previous prime is 28424993. The next prime is 28425029. The reversal of 28425012 is 21052482.

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, 14458 + ... + 16305.

It is an arithmetic number, because the mean of its divisors is an integer number (1722784).

Almost surely, 2^28425012 is an apocalyptic number.

28425012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28425012 is an abundant number, since it is smaller than the sum of its proper divisors (54268620).

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

28425012 is a wasteful number, since it uses less digits than its factorization.

28425012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30788 (or 30786 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28425012 is about 5331.5112304111. The cubic root of 28425012 is about 305.1876011492.

Adding to 28425012 its reverse (21052482), we get a palindrome (49477494).

The spelling of 28425012 in words is "twenty-eight million, four hundred twenty-five thousand, twelve".