16311996 has 48 divisors (see below), whose sum is σ = 42890400. Its totient is φ = 5360256.

The previous prime is 16311943. The next prime is 16312001. The reversal of 16311996 is 69911361.

16311996 is a `hidden beast` number, since 1 + 631 + 19 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 16311996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6850 + ... + 8918.

It is an arithmetic number, because the mean of its divisors is an integer number (893550).

Almost surely, 2^16311996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16311996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21445200).

16311996 is an abundant number, since it is smaller than the sum of its proper divisors (26578404).

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

16311996 is a wasteful number, since it uses less digits than its factorization.

16311996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2147 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 16311996 is about 4038.8112112353. The cubic root of 16311996 is about 253.6115541379.

The spelling of 16311996 in words is "sixteen million, three hundred eleven thousand, nine hundred ninety-six".