16646242 has 16 divisors (see below), whose sum is σ = 26544960. Its totient is φ = 7806672.

The previous prime is 16646237. The next prime is 16646243. The reversal of 16646242 is 24264661.

It is not an unprimeable number, because it can be changed into a prime (16646243) 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, 1788 + ... + 6040.

It is an arithmetic number, because the mean of its divisors is an integer number (1659060).

Almost surely, 2^16646242 is an apocalyptic number.

16646242 is a deficient number, since it is larger than the sum of its proper divisors (9898718).

16646242 is a wasteful number, since it uses less digits than its factorization.

16646242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377.

The product of its digits is 13824, while the sum is 31.

The square root of 16646242 is about 4079.9806372090. The cubic root of 16646242 is about 255.3320907135.

The spelling of 16646242 in words is "sixteen million, six hundred forty-six thousand, two hundred forty-two".