28484556 has 24 divisors (see below), whose sum is σ = 67307520. Its totient is φ = 9374352.

The previous prime is 28484549. The next prime is 28484563. The reversal of 28484556 is 65548482.

It is an interprime number because it is at equal distance from previous prime (28484549) and next prime (28484563).

It is a super-2 number, since 2×28484556² = 1622739861034272, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14076 + ... + 15971.

It is an arithmetic number, because the mean of its divisors is an integer number (2804480).

Almost surely, 2^28484556 is an apocalyptic number.

It is an amenable number.

28484556 is an abundant number, since it is smaller than the sum of its proper divisors (38822964).

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

28484556 is a wasteful number, since it uses less digits than its factorization.

28484556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30133 (or 30131 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 28484556 is about 5337.0924668774. The cubic root of 28484556 is about 305.4005522930.

The spelling of 28484556 in words is "twenty-eight million, four hundred eighty-four thousand, five hundred fifty-six".