16878870 has 72 divisors (see below), whose sum is σ = 45654336. Its totient is φ = 4326336.

The previous prime is 16878863. The next prime is 16878881. The reversal of 16878870 is 7887861.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 75579 + ... + 75801.

It is an arithmetic number, because the mean of its divisors is an integer number (634088).

Almost surely, 2^16878870 is an apocalyptic number.

16878870 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 16878870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22827168).

16878870 is an abundant number, since it is smaller than the sum of its proper divisors (28775466).

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

16878870 is a wasteful number, since it uses less digits than its factorization.

16878870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 16878870 is about 4108.3901956849. The cubic root of 16878870 is about 256.5159982270.

The spelling of 16878870 in words is "sixteen million, eight hundred seventy-eight thousand, eight hundred seventy".