28371012 has 48 divisors (see below), whose sum is σ = 67878720. Its totient is φ = 9220608.

The previous prime is 28370989. The next prime is 28371037. The reversal of 28371012 is 21017382.

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, 121648 + ... + 121880.

It is an arithmetic number, because the mean of its divisors is an integer number (1414140).

Almost surely, 2^28371012 is an apocalyptic number.

It is an amenable number.

28371012 is an abundant number, since it is smaller than the sum of its proper divisors (39507708).

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

28371012 is a wasteful number, since it uses less digits than its factorization.

28371012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 28371012 is about 5326.4445927842. Note that the first 3 decimals coincide. The cubic root of 28371012 is about 304.9942200822.

Adding to 28371012 its reverse (21017382), we get a palindrome (49388394).

The spelling of 28371012 in words is "twenty-eight million, three hundred seventy-one thousand, twelve".