16631250 has 48 divisors (see below), whose sum is σ = 41622336. Its totient is φ = 4430000.

The previous prime is 16631249. The next prime is 16631261. The reversal of 16631250 is 5213661.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16631250.

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, 18307 + ... + 19193.

It is an arithmetic number, because the mean of its divisors is an integer number (867132).

Almost surely, 2^16631250 is an apocalyptic number.

16631250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16631250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20811168).

16631250 is an abundant number, since it is smaller than the sum of its proper divisors (24991086).

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

16631250 is an frugal number, since it uses more digits than its factorization.

16631250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 16631250 is about 4078.1429597306. The cubic root of 16631250 is about 255.2554149798.

The spelling of 16631250 in words is "sixteen million, six hundred thirty-one thousand, two hundred fifty".