16890454 has 8 divisors (see below), whose sum is σ = 28955088. Its totient is φ = 7238760.

The previous prime is 16890451. The next prime is 16890479. The reversal of 16890454 is 45409861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16890454² = 570574872652232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603217 + ... + 603244.

It is an arithmetic number, because the mean of its divisors is an integer number (3619386).

Almost surely, 2^16890454 is an apocalyptic number.

16890454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16890454 is a deficient number, since it is larger than the sum of its proper divisors (12064634).

16890454 is a wasteful number, since it uses less digits than its factorization.

16890454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206470.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 16890454 is about 4109.7997518127. The cubic root of 16890454 is about 256.5746672770.

The spelling of 16890454 in words is "sixteen million, eight hundred ninety thousand, four hundred fifty-four".