16204642 has 8 divisors (see below), whose sum is σ = 24547932. Its totient is φ = 8022000.

The previous prime is 16204637. The next prime is 16204651. The reversal of 16204642 is 24640261.

It can be written as a sum of positive squares in 2 ways, for example, as 14907321 + 1297321 = 3861^2 + 1139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39909 + ... + 40312.

Almost surely, 2^16204642 is an apocalyptic number.

16204642 is a deficient number, since it is larger than the sum of its proper divisors (8343290).

16204642 is a wasteful number, since it uses less digits than its factorization.

16204642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80324.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 16204642 is about 4025.4989752824. The cubic root of 16204642 is about 253.0539652728.

The spelling of 16204642 in words is "sixteen million, two hundred four thousand, six hundred forty-two".