28465956 has 72 divisors (see below), whose sum is σ = 76900824. Its totient is φ = 8847360.

The previous prime is 28465937. The next prime is 28465963. The reversal of 28465956 is 65956482.

It can be written as a sum of positive squares in 4 ways, for example, as 7452900 + 21013056 = 2730^2 + 4584^2 .

It is an unprimeable number.

It is a nontrivial repunit in base 305.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117996 + ... + 118236.

It is an arithmetic number, because the mean of its divisors is an integer number (1068067).

Almost surely, 2^28465956 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 28465956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38450412).

28465956 is an abundant number, since it is smaller than the sum of its proper divisors (48434868).

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

28465956 is a wasteful number, since it uses less digits than its factorization.

28465956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 456 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 28465956 is about 5335.3496605190. The cubic root of 28465956 is about 305.3340637821.

The spelling of 28465956 in words is "twenty-eight million, four hundred sixty-five thousand, nine hundred fifty-six".