16091040 has 96 divisors (see below), whose sum is σ = 57939840. Its totient is φ = 3677184.

The previous prime is 16091021. The next prime is 16091059. The reversal of 16091040 is 4019061.

16091040 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16091021) and next prime (16091059).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 16090998 and 16091016.

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, 966 + ... + 5754.

It is an arithmetic number, because the mean of its divisors is an integer number (603540).

Almost surely, 2^16091040 is an apocalyptic number.

16091040 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 16091040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28969920).

16091040 is an abundant number, since it is smaller than the sum of its proper divisors (41848800).

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

16091040 is a wasteful number, since it uses less digits than its factorization.

16091040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4814 (or 4806 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 16091040 is about 4011.3638578419. The cubic root of 16091040 is about 252.4612364112.

The spelling of 16091040 in words is "sixteen million, ninety-one thousand, forty".