16315240 has 32 divisors (see below), whose sum is σ = 38870280. Its totient is φ = 6141952.

The previous prime is 16315231. The next prime is 16315241. The reversal of 16315240 is 4251361.

It can be written as a sum of positive squares in 4 ways, for example, as 9771876 + 6543364 = 3126^2 + 2558^2 .

It is not an unprimeable number, because it can be changed into a prime (16315241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11317 + ... + 12676.

Almost surely, 2^16315240 is an apocalyptic number.

16315240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16315240 is an abundant number, since it is smaller than the sum of its proper divisors (22555040).

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

16315240 is a wasteful number, since it uses less digits than its factorization.

16315240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24021 (or 24017 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16315240 is about 4039.2127945925. The cubic root of 16315240 is about 253.6283651064.

The spelling of 16315240 in words is "sixteen million, three hundred fifteen thousand, two hundred forty".