28877884 has 24 divisors (see below), whose sum is σ = 57909600. Its totient is φ = 12343296.

The previous prime is 28877873. The next prime is 28877887. The reversal of 28877884 is 48877882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11424 + ... + 13720.

It is an arithmetic number, because the mean of its divisors is an integer number (2412900).

Almost surely, 2^28877884 is an apocalyptic number.

It is an amenable number.

28877884 is an abundant number, since it is smaller than the sum of its proper divisors (29031716).

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

28877884 is a wasteful number, since it uses less digits than its factorization.

28877884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2755 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 52.

The square root of 28877884 is about 5373.8146599971. The cubic root of 28877884 is about 306.7998355683.

The spelling of 28877884 in words is "twenty-eight million, eight hundred seventy-seven thousand, eight hundred eighty-four".