16317240 has 32 divisors (see below), whose sum is σ = 48952080. Its totient is φ = 4351232.

The previous prime is 16317233. The next prime is 16317251. The reversal of 16317240 is 4271361.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16317240.

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, 67869 + ... + 68108.

Almost surely, 2^16317240 is an apocalyptic number.

16317240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16317240 is an abundant number, since it is smaller than the sum of its proper divisors (32634840).

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

16317240 is a wasteful number, since it uses less digits than its factorization.

16317240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135991 (or 135987 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 16317240 is about 4039.4603599986. The cubic root of 16317240 is about 253.6387283415.

The spelling of 16317240 in words is "sixteen million, three hundred seventeen thousand, two hundred forty".