28466688 has 80 divisors (see below), whose sum is σ = 77780736. Its totient is φ = 9246720.

The previous prime is 28466657. The next prime is 28466689. The reversal of 28466688 is 88666482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 (28466689) 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, 65833 + ... + 66263.

Almost surely, 2^28466688 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 28466688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38890368).

28466688 is an abundant number, since it is smaller than the sum of its proper divisors (49314048).

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

28466688 is an equidigital number, since it uses as much as digits as its factorization.

28466688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 479 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 28466688 is about 5335.4182591433. The cubic root of 28466688 is about 305.3366809741.

The spelling of 28466688 in words is "twenty-eight million, four hundred sixty-six thousand, six hundred eighty-eight".