16217240 has 48 divisors (see below), whose sum is σ = 39528000. Its totient is φ = 5985408.

The previous prime is 16217207. The next prime is 16217251. The reversal of 16217240 is 4271261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5561 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (823500).

Almost surely, 2^16217240 is an apocalyptic number.

16217240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16217240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19764000).

16217240 is an abundant number, since it is smaller than the sum of its proper divisors (23310760).

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

16217240 is a wasteful number, since it uses less digits than its factorization.

16217240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 16217240 is about 4027.0634462347. The cubic root of 16217240 is about 253.1195256653.

The spelling of 16217240 in words is "sixteen million, two hundred seventeen thousand, two hundred forty".