28622898 has 12 divisors (see below), whose sum is σ = 62016318. Its totient is φ = 9540960.

The previous prime is 28622887. The next prime is 28622929. The reversal of 28622898 is 89822682.

It can be written as a sum of positive squares in only one way, i.e., 21316689 + 7306209 = 4617^2 + 2703^2 .

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, 795063 + ... + 795098.

Almost surely, 2^28622898 is an apocalyptic number.

28622898 is an abundant number, since it is smaller than the sum of its proper divisors (33393420).

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

28622898 is a wasteful number, since it uses less digits than its factorization.

28622898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590169 (or 1590166 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 28622898 is about 5350.0371961324. The cubic root of 28622898 is about 305.8941707596.

The spelling of 28622898 in words is "twenty-eight million, six hundred twenty-two thousand, eight hundred ninety-eight".