16423634 has 8 divisors (see below), whose sum is σ = 25301388. Its totient is φ = 7989840.

The previous prime is 16423621. The next prime is 16423637. The reversal of 16423634 is 43632461.

It can be written as a sum of positive squares in 2 ways, for example, as 11202409 + 5221225 = 3347^2 + 2285^2 .

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 = 16423597 and 16423606.

It is not an unprimeable number, because it can be changed into a prime (16423637) 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, 110897 + ... + 111044.

Almost surely, 2^16423634 is an apocalyptic number.

16423634 is a deficient number, since it is larger than the sum of its proper divisors (8877754).

16423634 is a wasteful number, since it uses less digits than its factorization.

16423634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221980.

The product of its digits is 10368, while the sum is 29.

The square root of 16423634 is about 4052.6082959003. The cubic root of 16423634 is about 254.1888049993.

The spelling of 16423634 in words is "sixteen million, four hundred twenty-three thousand, six hundred thirty-four".