16143764 has 24 divisors (see below), whose sum is σ = 34771968. Its totient is φ = 6386400.

The previous prime is 16143763. The next prime is 16143773. The reversal of 16143764 is 46734161.

It is a super-2 number, since 2×16143764² = 521242232175392, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16143764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143763) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21812 + ... + 22539.

It is an arithmetic number, because the mean of its divisors is an integer number (1448832).

Almost surely, 2^16143764 is an apocalyptic number.

16143764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16143764 is an abundant number, since it is smaller than the sum of its proper divisors (18628204).

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

16143764 is a wasteful number, since it uses less digits than its factorization.

16143764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44375 (or 44373 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 16143764 is about 4017.9303129845. The cubic root of 16143764 is about 252.7366744726.

The spelling of 16143764 in words is "sixteen million, one hundred forty-three thousand, seven hundred sixty-four".