16219956 has 12 divisors (see below), whose sum is σ = 37846592. Its totient is φ = 5406648.

The previous prime is 16219933. The next prime is 16219981. The reversal of 16219956 is 65991261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675820 + ... + 675843.

Almost surely, 2^16219956 is an apocalyptic number.

It is an amenable number.

16219956 is an abundant number, since it is smaller than the sum of its proper divisors (21626636).

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

16219956 is a wasteful number, since it uses less digits than its factorization.

16219956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351670 (or 1351668 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 16219956 is about 4027.4006505437. The cubic root of 16219956 is about 253.1336553663.

The spelling of 16219956 in words is "sixteen million, two hundred nineteen thousand, nine hundred fifty-six".