16019940 has 24 divisors (see below), whose sum is σ = 44856000. Its totient is φ = 4271968.

The previous prime is 16019929. The next prime is 16019947. The reversal of 16019940 is 4991061.

It is a super-3 number, since 3×16019940³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16019898 and 16019907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16019947) 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, 133440 + ... + 133559.

It is an arithmetic number, because the mean of its divisors is an integer number (1869000).

Almost surely, 2^16019940 is an apocalyptic number.

16019940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16019940 is an abundant number, since it is smaller than the sum of its proper divisors (28836060).

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

16019940 is a wasteful number, since it uses less digits than its factorization.

16019940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267011 (or 267009 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 16019940 is about 4002.4917239140. The cubic root of 16019940 is about 252.0888449645.

It can be divided in two parts, 160 and 19940, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 16019940 in words is "sixteen million, nineteen thousand, nine hundred forty".