16309490 has 16 divisors (see below), whose sum is σ = 29514240. Its totient is φ = 6488880.

The previous prime is 16309487. The next prime is 16309523. The reversal of 16309490 is 9490361.

It is an alternating number because its digits alternate between odd and even.

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, 2360 + ... + 6179.

It is an arithmetic number, because the mean of its divisors is an integer number (1844640).

Almost surely, 2^16309490 is an apocalyptic number.

16309490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16309490 is a deficient number, since it is larger than the sum of its proper divisors (13204750).

16309490 is a wasteful number, since it uses less digits than its factorization.

16309490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16309490 is about 4038.5009595146. The cubic root of 16309490 is about 253.5985660870.

The spelling of 16309490 in words is "sixteen million, three hundred nine thousand, four hundred ninety".