16840454 has 8 divisors (see below), whose sum is σ = 25459968. Its totient is φ = 8353800.

The previous prime is 16840433. The next prime is 16840457. The reversal of 16840454 is 45404861.

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

It is a super-2 number, since 2×16840454² = 567201781852232, 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 16840454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16840457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32897 + ... + 33404.

It is an arithmetic number, because the mean of its divisors is an integer number (3182496).

Almost surely, 2^16840454 is an apocalyptic number.

16840454 is a deficient number, since it is larger than the sum of its proper divisors (8619514).

16840454 is a wasteful number, since it uses less digits than its factorization.

16840454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66430.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 16840454 is about 4103.7122218791. The cubic root of 16840454 is about 256.3212418217.

The spelling of 16840454 in words is "sixteen million, eight hundred forty thousand, four hundred fifty-four".