28999152 has 120 divisors (see below), whose sum is σ = 99931104. Its totient is φ = 7644672.

The previous prime is 28999147. The next prime is 28999163. The reversal of 28999152 is 25199982.

It is a junction number, because it is equal to n+sod(n) for n = 28999098 and 28999107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11998 + ... + 14210.

Almost surely, 2^28999152 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 28999152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49965552).

28999152 is an abundant number, since it is smaller than the sum of its proper divisors (70931952).

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

28999152 is a wasteful number, since it uses less digits than its factorization.

28999152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2238 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 28999152 is about 5385.0860717355. The cubic root of 28999152 is about 307.2286879133.

The spelling of 28999152 in words is "twenty-eight million, nine hundred ninety-nine thousand, one hundred fifty-two".