16919380 has 12 divisors (see below), whose sum is σ = 35530740. Its totient is φ = 6767744.

The previous prime is 16919327. The next prime is 16919381. The reversal of 16919380 is 8391961.

It can be written as a sum of positive squares in 2 ways, for example, as 9960336 + 6959044 = 3156^2 + 2638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16919381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422965 + ... + 423004.

It is an arithmetic number, because the mean of its divisors is an integer number (2960895).

Almost surely, 2^16919380 is an apocalyptic number.

16919380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16919380 is an abundant number, since it is smaller than the sum of its proper divisors (18611360).

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

16919380 is a wasteful number, since it uses less digits than its factorization.

16919380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845978 (or 845976 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 16919380 is about 4113.3173959713. The cubic root of 16919380 is about 256.7210506750.

The spelling of 16919380 in words is "sixteen million, nine hundred nineteen thousand, three hundred eighty".