16019964 has 96 divisors (see below), whose sum is σ = 45113600. Its totient is φ = 4898880.

The previous prime is 16019959. The next prime is 16019981. The reversal of 16019964 is 46991061.

16019964 = T₉₁₂ + T₉₁₃ + ... + T₉₄₈.

It is a super-2 number, since 2×16019964² = 513278493122592, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75819 + ... + 76029.

Almost surely, 2^16019964 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 16019964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22556800).

16019964 is an abundant number, since it is smaller than the sum of its proper divisors (29093636).

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

16019964 is a wasteful number, since it uses less digits than its factorization.

16019964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 16019964 is about 4002.4947220452. The cubic root of 16019964 is about 252.0889708519.

The spelling of 16019964 in words is "sixteen million, nineteen thousand, nine hundred sixty-four".