16651242 has 24 divisors (see below), whose sum is σ = 36618816. Its totient is φ = 5467176.

The previous prime is 16651237. The next prime is 16651253. The reversal of 16651242 is 24215661.

16651242 is a `hidden beast` number, since 1 + 6 + 651 + 2 + 4 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5698 + ... + 8109.

It is an arithmetic number, because the mean of its divisors is an integer number (1525784).

Almost surely, 2^16651242 is an apocalyptic number.

16651242 is an abundant number, since it is smaller than the sum of its proper divisors (19967574).

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

16651242 is a wasteful number, since it uses less digits than its factorization.

16651242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13882 (or 13879 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 16651242 is about 4080.5933392094. The cubic root of 16651242 is about 255.3576526922.

The spelling of 16651242 in words is "sixteen million, six hundred fifty-one thousand, two hundred forty-two".