16120340 has 12 divisors (see below), whose sum is σ = 33852756. Its totient is φ = 6448128.

The previous prime is 16120331. The next prime is 16120361. The reversal of 16120340 is 4302161.

It can be written as a sum of positive squares in 2 ways, for example, as 3489424 + 12630916 = 1868^2 + 3554^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402989 + ... + 403028.

It is an arithmetic number, because the mean of its divisors is an integer number (2821063).

Almost surely, 2^16120340 is an apocalyptic number.

16120340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16120340 is an abundant number, since it is smaller than the sum of its proper divisors (17732416).

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

16120340 is a wasteful number, since it uses less digits than its factorization.

16120340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806026 (or 806024 counting only the distinct ones).

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

The square root of 16120340 is about 4015.0143212696. The cubic root of 16120340 is about 252.6143781387.

The spelling of 16120340 in words is "sixteen million, one hundred twenty thousand, three hundred forty".