28980418 has 4 divisors (see below), whose sum is σ = 43470630. Its totient is φ = 14490208.

The previous prime is 28980383. The next prime is 28980431. The reversal of 28980418 is 81408982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 3143529 = 5083^2 + 1773^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7245103 + ... + 7245106.

Almost surely, 2^28980418 is an apocalyptic number.

28980418 is a deficient number, since it is larger than the sum of its proper divisors (14490212).

28980418 is a wasteful number, since it uses less digits than its factorization.

28980418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14490211.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 28980418 is about 5383.3463570534. The cubic root of 28980418 is about 307.1625151496.

The spelling of 28980418 in words is "twenty-eight million, nine hundred eighty thousand, four hundred eighteen".