16040920 has 64 divisors (see below), whose sum is σ = 41990400. Its totient is φ = 5400960.

The previous prime is 16040917. The next prime is 16040923. The reversal of 16040920 is 2904061.

It is an interprime number because it is at equal distance from previous prime (16040917) and next prime (16040923).

It is a super-2 number, since 2×16040920² = 514622228892800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16040891 and 16040900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040923) 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 15 ways as a sum of consecutive naturals, for example, 16035 + ... + 17005.

It is an arithmetic number, because the mean of its divisors is an integer number (656100).

Almost surely, 2^16040920 is an apocalyptic number.

16040920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16040920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20995200).

16040920 is an abundant number, since it is smaller than the sum of its proper divisors (25949480).

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

16040920 is a wasteful number, since it uses less digits than its factorization.

16040920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 16040920 is about 4005.1117337722. Note that the first 3 decimals coincide. The cubic root of 16040920 is about 252.1988436466.

Adding to 16040920 its reverse (2904061), we get a palindrome (18944981).

The spelling of 16040920 in words is "sixteen million, forty thousand, nine hundred twenty".