28290496 has 56 divisors (see below), whose sum is σ = 62158880. Its totient is φ = 12690432.

The previous prime is 28290463. The next prime is 28290511. The reversal of 28290496 is 69409282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30325 + ... + 31243.

It is an arithmetic number, because the mean of its divisors is an integer number (1109980).

Almost surely, 2^28290496 is an apocalyptic number.

28290496 is a gapful number since it is divisible by the number (26) 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 28290496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31079440).

28290496 is an abundant number, since it is smaller than the sum of its proper divisors (33868384).

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

28290496 is a wasteful number, since it uses less digits than its factorization.

28290496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28290496 is about 5318.8810853412. The cubic root of 28290496 is about 304.7054255209.

The spelling of 28290496 in words is "twenty-eight million, two hundred ninety thousand, four hundred ninety-six".