28877562 has 72 divisors (see below), whose sum is σ = 75359700. Its totient is φ = 7959168.

The previous prime is 28877561. The next prime is 28877567. The reversal of 28877562 is 26577882.

28877562 is a `hidden beast` number, since 2 + 8 + 87 + 7 + 562 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27342441 + 1535121 = 5229^2 + 1239^2 .

It is not an unprimeable number, because it can be changed into a prime (28877561) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25014 + ... + 26142.

Almost surely, 2^28877562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28877562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37679850).

28877562 is an abundant number, since it is smaller than the sum of its proper divisors (46482138).

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

28877562 is a wasteful number, since it uses less digits than its factorization.

28877562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1170 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 28877562 is about 5373.7846998182. The cubic root of 28877562 is about 306.7986952502.

The spelling of 28877562 in words is "twenty-eight million, eight hundred seventy-seven thousand, five hundred sixty-two".