28877652 has 36 divisors (see below), whose sum is σ = 73824660. Its totient is φ = 9516672.

The previous prime is 28877593. The next prime is 28877657. The reversal of 28877652 is 25677882.

It can be written as a sum of positive squares in 2 ways, for example, as 9217296 + 19660356 = 3036^2 + 4434^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 28877598 and 28877607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1303 + ... + 7710.

It is an arithmetic number, because the mean of its divisors is an integer number (2050685).

Almost surely, 2^28877652 is an apocalyptic number.

It is an amenable number.

28877652 is an abundant number, since it is smaller than the sum of its proper divisors (44947008).

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

28877652 is a wasteful number, since it uses less digits than its factorization.

28877652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9112 (or 9107 counting only the distinct ones).

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

The square root of 28877652 is about 5373.7930737981. The cubic root of 28877652 is about 306.7990139735.

The spelling of 28877652 in words is "twenty-eight million, eight hundred seventy-seven thousand, six hundred fifty-two".