28655368 has 16 divisors (see below), whose sum is σ = 61404480. Its totient is φ = 12280848.

The previous prime is 28655359. The next prime is 28655369. The reversal of 28655368 is 86355682.

It is a happy number.

It is a super-2 number, since 2×28655368² = 1642260230430848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28655369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255796 + ... + 255907.

It is an arithmetic number, because the mean of its divisors is an integer number (3837780).

Almost surely, 2^28655368 is an apocalyptic number.

28655368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28655368 is an abundant number, since it is smaller than the sum of its proper divisors (32749112).

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

28655368 is a wasteful number, since it uses less digits than its factorization.

28655368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511716 (or 511712 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 28655368 is about 5353.0708943559. The cubic root of 28655368 is about 306.0097964882.

The spelling of 28655368 in words is "twenty-eight million, six hundred fifty-five thousand, three hundred sixty-eight".