28626648 has 32 divisors (see below), whose sum is σ = 73233600. Its totient is φ = 9319968.

The previous prime is 28626607. The next prime is 28626649. The reversal of 28626648 is 84662682.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28626649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12838 + ... + 14901.

It is an arithmetic number, because the mean of its divisors is an integer number (2288550).

Almost surely, 2^28626648 is an apocalyptic number.

It is an amenable number.

28626648 is an abundant number, since it is smaller than the sum of its proper divisors (44606952).

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

28626648 is a wasteful number, since it uses less digits than its factorization.

28626648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27791 (or 27787 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 28626648 is about 5350.3876495073. The cubic root of 28626648 is about 305.9075289813.

The spelling of 28626648 in words is "twenty-eight million, six hundred twenty-six thousand, six hundred forty-eight".