16416490 has 16 divisors (see below), whose sum is σ = 29822760. Its totient is φ = 6505920.

The previous prime is 16416473. The next prime is 16416511. The reversal of 16416490 is 9461461.

It can be written as a sum of positive squares in 4 ways, for example, as 15657849 + 758641 = 3957^2 + 871^2 .

It is a super-2 number, since 2×16416490² = 539002287840200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6441 + ... + 8620.

Almost surely, 2^16416490 is an apocalyptic number.

16416490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16416490 is a deficient number, since it is larger than the sum of its proper divisors (13406270).

16416490 is a wasteful number, since it uses less digits than its factorization.

16416490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15177.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16416490 is about 4051.7267923689. The cubic root of 16416490 is about 254.1519437260.

The spelling of 16416490 in words is "sixteen million, four hundred sixteen thousand, four hundred ninety".