16538242 has 16 divisors (see below), whose sum is σ = 29584512. Its totient is φ = 6779520.

The previous prime is 16538239. The next prime is 16538251. The reversal of 16538242 is 24283561.

16538242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25359 + ... + 26002.

It is an arithmetic number, because the mean of its divisors is an integer number (1849032).

Almost surely, 2^16538242 is an apocalyptic number.

16538242 is a deficient number, since it is larger than the sum of its proper divisors (13046270).

16538242 is a wasteful number, since it uses less digits than its factorization.

16538242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51393.

The product of its digits is 11520, while the sum is 31.

The square root of 16538242 is about 4066.7237427689. The cubic root of 16538242 is about 254.7786981691.

The spelling of 16538242 in words is "sixteen million, five hundred thirty-eight thousand, two hundred forty-two".