28990296 has 48 divisors (see below), whose sum is σ = 79115400. Its totient is φ = 9589632.

The previous prime is 28990289. The next prime is 28990307. The reversal of 28990296 is 69209982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8395 + ... + 11333.

Almost surely, 2^28990296 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 28990296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39557700).

28990296 is an abundant number, since it is smaller than the sum of its proper divisors (50125104).

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

28990296 is a wasteful number, since it uses less digits than its factorization.

28990296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088 (or 3081 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 28990296 is about 5384.2637379683. The cubic root of 28990296 is about 307.1974100530.

The spelling of 28990296 in words is "twenty-eight million, nine hundred ninety thousand, two hundred ninety-six".