16320140 has 24 divisors (see below), whose sum is σ = 34382880. Its totient is φ = 6507008.

The previous prime is 16320137. The next prime is 16320149. The reversal of 16320140 is 4102361.

It is not an unprimeable number, because it can be changed into a prime (16320149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6044 + ... + 8316.

It is an arithmetic number, because the mean of its divisors is an integer number (1432620).

Almost surely, 2^16320140 is an apocalyptic number.

16320140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16320140 is an abundant number, since it is smaller than the sum of its proper divisors (18062740).

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

16320140 is a wasteful number, since it uses less digits than its factorization.

16320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16320140 is about 4039.8193028897. The cubic root of 16320140 is about 253.6537535284.

The spelling of 16320140 in words is "sixteen million, three hundred twenty thousand, one hundred forty".