16123404 has 24 divisors (see below), whose sum is σ = 41041728. Its totient is φ = 4885840.

The previous prime is 16123403. The next prime is 16123421. The reversal of 16123404 is 40432161.

It is not an unprimeable number, because it can be changed into a prime (16123403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60942 + ... + 61205.

It is an arithmetic number, because the mean of its divisors is an integer number (1710072).

Almost surely, 2^16123404 is an apocalyptic number.

It is an amenable number.

16123404 is an abundant number, since it is smaller than the sum of its proper divisors (24918324).

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

16123404 is a wasteful number, since it uses less digits than its factorization.

16123404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122165 (or 122163 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 16123404 is about 4015.3958708949. The cubic root of 16123404 is about 252.6303819662.

Adding to 16123404 its reverse (40432161), we get a palindrome (56555565).

The spelling of 16123404 in words is "sixteen million, one hundred twenty-three thousand, four hundred four".