28553976 has 96 divisors (see below), whose sum is σ = 87160320. Its totient is φ = 8366400.

The previous prime is 28553963. The next prime is 28553977. The reversal of 28553976 is 67935582.

It is a happy number.

28553976 is a `hidden beast` number, since 2 + 8 + 553 + 97 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28553977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23971 + ... + 25133.

It is an arithmetic number, because the mean of its divisors is an integer number (907920).

Almost surely, 2^28553976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28553976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43580160).

28553976 is an abundant number, since it is smaller than the sum of its proper divisors (58606344).

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

28553976 is a wasteful number, since it uses less digits than its factorization.

28553976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217 (or 1210 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 28553976 is about 5343.5920502973. The cubic root of 28553976 is about 305.6484492779.

The spelling of 28553976 in words is "twenty-eight million, five hundred fifty-three thousand, nine hundred seventy-six".