16490243 has 12 divisors (see below), whose sum is σ = 20716080. Its totient is φ = 12848880.

The previous prime is 16490239. The next prime is 16490249. The reversal of 16490243 is 34209461.

It is not a de Polignac number, because 16490243 - 2² = 16490239 is a prime.

It is a super-2 number, since 2×16490243² = 543856228398098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16490249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8888 + ... + 10581.

It is an arithmetic number, because the mean of its divisors is an integer number (1726340).

Almost surely, 2^16490243 is an apocalyptic number.

16490243 is a deficient number, since it is larger than the sum of its proper divisors (4225837).

16490243 is a wasteful number, since it uses less digits than its factorization.

16490243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19498 (or 19487 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 16490243 is about 4060.8180210396. The cubic root of 16490243 is about 254.5319776144.

The spelling of 16490243 in words is "sixteen million, four hundred ninety thousand, two hundred forty-three".