16621454 has 8 divisors (see below), whose sum is σ = 24949848. Its totient is φ = 8304840.

The previous prime is 16621453. The next prime is 16621457. The reversal of 16621454 is 45412661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16621453) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2924 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (3118731).

Almost surely, 2^16621454 is an apocalyptic number.

16621454 is a deficient number, since it is larger than the sum of its proper divisors (8328394).

16621454 is a wasteful number, since it uses less digits than its factorization.

16621454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890.

The product of its digits is 5760, while the sum is 29.

The square root of 16621454 is about 4076.9417459660. The cubic root of 16621454 is about 255.2052889992.

The spelling of 16621454 in words is "sixteen million, six hundred twenty-one thousand, four hundred fifty-four".