16870356 has 30 divisors (see below), whose sum is σ = 44103290. Its totient is φ = 5623344.

The previous prime is 16870349. The next prime is 16870361. The reversal of 16870356 is 65307861.

It can be written as a sum of positive squares in only one way, i.e., 16402500 + 467856 = 4050^2 + 684^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 16870356.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 25711 + ... + 26358.

Almost surely, 2^16870356 is an apocalyptic number.

It is an amenable number.

16870356 is an abundant number, since it is smaller than the sum of its proper divisors (27232934).

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

16870356 is a wasteful number, since it uses less digits than its factorization.

16870356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52085 (or 52074 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 16870356 is about 4107.3538927149. The cubic root of 16870356 is about 256.4728605737.

The spelling of 16870356 in words is "sixteen million, eight hundred seventy thousand, three hundred fifty-six".