16878132 has 60 divisors (see below), whose sum is σ = 44609796. Its totient is φ = 5564160.

The previous prime is 16878119. The next prime is 16878139. The reversal of 16878132 is 23187861.

It can be written as a sum of positive squares in 2 ways, for example, as 2178576 + 14699556 = 1476^2 + 3834^2 .

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 (16878139) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36382 + ... + 36842.

Almost surely, 2^16878132 is an apocalyptic number.

16878132 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 16878132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22304898).

16878132 is an abundant number, since it is smaller than the sum of its proper divisors (27731664).

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

16878132 is a wasteful number, since it uses less digits than its factorization.

16878132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 579 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 16878132 is about 4108.3003785020. The cubic root of 16878132 is about 256.5122595967.

The spelling of 16878132 in words is "sixteen million, eight hundred seventy-eight thousand, one hundred thirty-two".