28948824 has 96 divisors (see below), whose sum is σ = 84492720. Its totient is φ = 8921088.

The previous prime is 28948811. The next prime is 28948849. The reversal of 28948824 is 42884982.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28948824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81832 + ... + 82184.

Almost surely, 2^28948824 is an apocalyptic number.

28948824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28948824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42246360).

28948824 is an abundant number, since it is smaller than the sum of its proper divisors (55543896).

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

28948824 is a wasteful number, since it uses less digits than its factorization.

28948824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 442 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 28948824 is about 5380.4111367069. The cubic root of 28948824 is about 307.0508533003.

The spelling of 28948824 in words is "twenty-eight million, nine hundred forty-eight thousand, eight hundred twenty-four".