28990450 has 12 divisors (see below), whose sum is σ = 53922330. Its totient is φ = 11596160.

The previous prime is 28990439. The next prime is 28990463. The reversal of 28990450 is 5409982.

It can be written as a sum of positive squares in 3 ways, for example, as 27804529 + 1185921 = 5273^2 + 1089^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289855 + ... + 289954.

Almost surely, 2^28990450 is an apocalyptic number.

28990450 is a deficient number, since it is larger than the sum of its proper divisors (24931880).

28990450 is a wasteful number, since it uses less digits than its factorization.

28990450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579821 (or 579816 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28990450 is about 5384.2780388832. The cubic root of 28990450 is about 307.1979540088.

The spelling of 28990450 in words is "twenty-eight million, nine hundred ninety thousand, four hundred fifty".