16623954 has 40 divisors (see below), whose sum is σ = 37701180. Its totient is φ = 5474304.

The previous prime is 16623949. The next prime is 16623961. The reversal of 16623954 is 45932661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16621929 + 2025 = 4077^2 + 45^2 .

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13842 + ... + 14994.

Almost surely, 2^16623954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16623954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18850590).

16623954 is an abundant number, since it is smaller than the sum of its proper divisors (21077226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16623954 is a wasteful number, since it uses less digits than its factorization.

16623954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1247 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 16623954 is about 4077.2483368076. The cubic root of 16623954 is about 255.2180833319.

The spelling of 16623954 in words is "sixteen million, six hundred twenty-three thousand, nine hundred fifty-four".