16878432 has 48 divisors (see below), whose sum is σ = 44740080. Its totient is φ = 5571072.

The previous prime is 16878409. The next prime is 16878437. The reversal of 16878432 is 23487861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16878437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9658 + ... + 11270.

It is an arithmetic number, because the mean of its divisors is an integer number (932085).

Almost surely, 2^16878432 is an apocalyptic number.

16878432 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 16878432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22370040).

16878432 is an abundant number, since it is smaller than the sum of its proper divisors (27861648).

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

16878432 is a wasteful number, since it uses less digits than its factorization.

16878432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1727 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 16878432 is about 4108.3368897889. The cubic root of 16878432 is about 256.5137793782.

The spelling of 16878432 in words is "sixteen million, eight hundred seventy-eight thousand, four hundred thirty-two".