16398252 has 72 divisors (see below), whose sum is σ = 45894576. Its totient is φ = 4904064.

The previous prime is 16398223. The next prime is 16398269. The reversal of 16398252 is 25289361.

16398252 is a `hidden beast` number, since 16 + 398 + 252 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 16843 + ... + 17789.

Almost surely, 2^16398252 is an apocalyptic number.

16398252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16398252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22947288).

16398252 is an abundant number, since it is smaller than the sum of its proper divisors (29496324).

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

16398252 is a wasteful number, since it uses less digits than its factorization.

16398252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1002 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 16398252 is about 4049.4755215954. The cubic root of 16398252 is about 254.0577916322.

The spelling of 16398252 in words is "sixteen million, three hundred ninety-eight thousand, two hundred fifty-two".