16878372 has 48 divisors (see below), whose sum is σ = 45696000. Its totient is φ = 4748832.

The previous prime is 16878371. The next prime is 16878373. The reversal of 16878372 is 27387861.

It is an interprime number because it is at equal distance from previous prime (16878371) and next prime (16878373).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (16878371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4129 + ... + 7127.

It is an arithmetic number, because the mean of its divisors is an integer number (952000).

Almost surely, 2^16878372 is an apocalyptic number.

16878372 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 16878372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22848000).

16878372 is an abundant number, since it is smaller than the sum of its proper divisors (28817628).

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

16878372 is a wasteful number, since it uses less digits than its factorization.

16878372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3078 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 16878372 is about 4108.3295875575. The cubic root of 16878372 is about 256.5134754234.

The spelling of 16878372 in words is "sixteen million, eight hundred seventy-eight thousand, three hundred seventy-two".