16091840 has 28 divisors (see below), whose sum is σ = 38319456. Its totient is φ = 6436608.

The previous prime is 16091827. The next prime is 16091857. The reversal of 16091840 is 4819061.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24824 + ... + 25463.

It is an arithmetic number, because the mean of its divisors is an integer number (1368552).

Almost surely, 2^16091840 is an apocalyptic number.

16091840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16091840 is an abundant number, since it is smaller than the sum of its proper divisors (22227616).

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

16091840 is an equidigital number, since it uses as much as digits as its factorization.

16091840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50304 (or 50294 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16091840 is about 4011.4635733109. The cubic root of 16091840 is about 252.4654202229.

The spelling of 16091840 in words is "sixteen million, ninety-one thousand, eight hundred forty".