28655502 has 8 divisors (see below), whose sum is σ = 57311016. Its totient is φ = 9551832.

The previous prime is 28655491. The next prime is 28655503. The reversal of 28655502 is 20555682.

It is a sphenic number, since it is the product of 3 distinct primes.

28655502 is an admirable number.

It is a super-2 number, since 2×28655502² = 1642275589744008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28655503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387953 + ... + 2387964.

It is an arithmetic number, because the mean of its divisors is an integer number (7163877).

Almost surely, 2^28655502 is an apocalyptic number.

28655502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28655502 is a wasteful number, since it uses less digits than its factorization.

28655502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775922.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 28655502 is about 5353.0834105215. The cubic root of 28655502 is about 306.0102734814.

The spelling of 28655502 in words is "twenty-eight million, six hundred fifty-five thousand, five hundred two".