16872372 has 72 divisors (see below), whose sum is σ = 47017152. Its totient is φ = 5059200.

The previous prime is 16872343. The next prime is 16872379. The reversal of 16872372 is 27327861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54097 + ... + 54407.

It is an arithmetic number, because the mean of its divisors is an integer number (653016).

Almost surely, 2^16872372 is an apocalyptic number.

16872372 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 16872372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23508576).

16872372 is an abundant number, since it is smaller than the sum of its proper divisors (30144780).

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

16872372 is a wasteful number, since it uses less digits than its factorization.

16872372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 464 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 16872372 is about 4107.5992988606. The cubic root of 16872372 is about 256.4830762975.

The spelling of 16872372 in words is "sixteen million, eight hundred seventy-two thousand, three hundred seventy-two".