28877212 has 24 divisors (see below), whose sum is σ = 62197856. Its totient is φ = 11423808.

The previous prime is 28877179. The next prime is 28877231. The reversal of 28877212 is 21277882.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39303 + ... + 40030.

Almost surely, 2^28877212 is an apocalyptic number.

It is an amenable number.

28877212 is an abundant number, since it is smaller than the sum of its proper divisors (33320644).

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

28877212 is a wasteful number, since it uses less digits than its factorization.

28877212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79357 (or 79355 counting only the distinct ones).

The product of its digits is 25088, while the sum is 37.

The square root of 28877212 is about 5373.7521342168. The cubic root of 28877212 is about 306.7974557645.

It can be divided in two parts, 28 and 877212, that multiplied together give a square (24561936 = 4956²).

The spelling of 28877212 in words is "twenty-eight million, eight hundred seventy-seven thousand, two hundred twelve".