16523874 has 12 divisors (see below), whose sum is σ = 35801766. Its totient is φ = 5507952.

The previous prime is 16523873. The next prime is 16523879. The reversal of 16523874 is 47832561.

It can be written as a sum of positive squares in only one way, i.e., 14493249 + 2030625 = 3807^2 + 1425^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16523873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 458979 + ... + 459014.

Almost surely, 2^16523874 is an apocalyptic number.

16523874 is an abundant number, since it is smaller than the sum of its proper divisors (19277892).

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

16523874 is a wasteful number, since it uses less digits than its factorization.

16523874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918001 (or 917998 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 16523874 is about 4064.9568263390. The cubic root of 16523874 is about 254.7048950619.

The spelling of 16523874 in words is "sixteen million, five hundred twenty-three thousand, eight hundred seventy-four".