16621834 has 8 divisors (see below), whose sum is σ = 25355520. Its totient is φ = 8169996.

The previous prime is 16621811. The next prime is 16621841. The reversal of 16621834 is 43812661.

It is a happy number.

16621834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 16621796 and 16621805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70314 + ... + 70549.

It is an arithmetic number, because the mean of its divisors is an integer number (3169440).

Almost surely, 2^16621834 is an apocalyptic number.

16621834 is a deficient number, since it is larger than the sum of its proper divisors (8733686).

16621834 is a wasteful number, since it uses less digits than its factorization.

16621834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140924.

The product of its digits is 6912, while the sum is 31.

The square root of 16621834 is about 4076.9883492598. The cubic root of 16621834 is about 255.2072338204.

The spelling of 16621834 in words is "sixteen million, six hundred twenty-one thousand, eight hundred thirty-four".