16971290 has 16 divisors (see below), whose sum is σ = 34912512. Its totient is φ = 5818704.

The previous prime is 16971281. The next prime is 16971307. The reversal of 16971290 is 9217961.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16971290.

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 7 ways as a sum of consecutive naturals, for example, 121154 + ... + 121293.

It is an arithmetic number, because the mean of its divisors is an integer number (2182032).

Almost surely, 2^16971290 is an apocalyptic number.

16971290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16971290 is an abundant number, since it is smaller than the sum of its proper divisors (17941222).

16971290 is a wasteful number, since it uses less digits than its factorization.

16971290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242461.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 16971290 is about 4119.6225555262. The cubic root of 16971290 is about 256.9833294763.

The spelling of 16971290 in words is "sixteen million, nine hundred seventy-one thousand, two hundred ninety".