16316240 has 20 divisors (see below), whose sum is σ = 37935444. Its totient is φ = 6526464.

The previous prime is 16316239. The next prime is 16316249. The reversal of 16316240 is 4261361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11262736 + 5053504 = 3356^2 + 2248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16316249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101897 + ... + 102056.

Almost surely, 2^16316240 is an apocalyptic number.

16316240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16316240 is an abundant number, since it is smaller than the sum of its proper divisors (21619204).

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

16316240 is a wasteful number, since it uses less digits than its factorization.

16316240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203966 (or 203960 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16316240 is about 4039.3365791922. The cubic root of 16316240 is about 253.6335468298.

The spelling of 16316240 in words is "sixteen million, three hundred sixteen thousand, two hundred forty".