16490690 has 16 divisors (see below), whose sum is σ = 29902392. Its totient is φ = 6547584.

The previous prime is 16490687. The next prime is 16490707. The reversal of 16490690 is 9609461.

16490690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8543929 + 7946761 = 2923^2 + 2819^2 .

It is a super-2 number, since 2×16490690² = 543885713352200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16490690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4649 + ... + 7388.

Almost surely, 2^16490690 is an apocalyptic number.

16490690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16490690 is a deficient number, since it is larger than the sum of its proper divisors (13411702).

16490690 is a wasteful number, since it uses less digits than its factorization.

16490690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12181.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 16490690 is about 4060.8730588385. The cubic root of 16490690 is about 254.5342774545.

The spelling of 16490690 in words is "sixteen million, four hundred ninety thousand, six hundred ninety".