16195140 has 120 divisors (see below), whose sum is σ = 54783960. Its totient is φ = 3981312.

The previous prime is 16195139. The next prime is 16195183. The reversal of 16195140 is 4159161.

16195140 is a `hidden beast` number, since 1 + 619 + 5 + 1 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 16112196 = 288^2 + 4014^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 20676 + ... + 21444.

It is an arithmetic number, because the mean of its divisors is an integer number (456533).

Almost surely, 2^16195140 is an apocalyptic number.

16195140 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 16195140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27391980).

16195140 is an abundant number, since it is smaller than the sum of its proper divisors (38588820).

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

16195140 is a wasteful number, since it uses less digits than its factorization.

16195140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 16195140 is about 4024.3185758585. The cubic root of 16195140 is about 253.0044940798.

The spelling of 16195140 in words is "sixteen million, one hundred ninety-five thousand, one hundred forty".