16672290 has 16 divisors (see below), whose sum is σ = 40013568. Its totient is φ = 4445936.

The previous prime is 16672283. The next prime is 16672321. The reversal of 16672290 is 9227661.

It is a Curzon number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277842 + ... + 277901.

It is an arithmetic number, because the mean of its divisors is an integer number (2500848).

Almost surely, 2^16672290 is an apocalyptic number.

16672290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16672290 is an abundant number, since it is smaller than the sum of its proper divisors (23341278).

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

16672290 is a wasteful number, since it uses less digits than its factorization.

16672290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555753.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 16672290 is about 4083.1715614213. The cubic root of 16672290 is about 255.4652023233.

The spelling of 16672290 in words is "sixteen million, six hundred seventy-two thousand, two hundred ninety".