16138140 has 24 divisors (see below), whose sum is σ = 45186960. Its totient is φ = 4303488.

The previous prime is 16138139. The next prime is 16138169. The reversal of 16138140 is 4183161.

It is a self number, because there is not a number n which added to its sum of digits gives 16138140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134425 + ... + 134544.

It is an arithmetic number, because the mean of its divisors is an integer number (1882790).

Almost surely, 2^16138140 is an apocalyptic number.

16138140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16138140 is an abundant number, since it is smaller than the sum of its proper divisors (29048820).

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

16138140 is a wasteful number, since it uses less digits than its factorization.

16138140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268981 (or 268979 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 16138140 is about 4017.2303892110. The cubic root of 16138140 is about 252.7073224548.

The spelling of 16138140 in words is "sixteen million, one hundred thirty-eight thousand, one hundred forty".