28932012 has 48 divisors (see below), whose sum is σ = 75980800. Its totient is φ = 9519120.

The previous prime is 28931993. The next prime is 28932023. The reversal of 28932012 is 21023982.

It is a happy number.

It is a super-2 number, since 2×28932012² = 1674122636736288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 6837 + ... + 10227.

Almost surely, 2^28932012 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 28932012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37990400).

28932012 is an abundant number, since it is smaller than the sum of its proper divisors (47048788).

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

28932012 is a wasteful number, since it uses less digits than its factorization.

28932012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483 (or 3475 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28932012 is about 5378.8485756712. The cubic root of 28932012 is about 306.9914019668.

Adding to 28932012 its reverse (21023982), we get a palindrome (49955994).

The spelling of 28932012 in words is "twenty-eight million, nine hundred thirty-two thousand, twelve".