16213240 has 64 divisors (see below), whose sum is σ = 39152160. Its totient is φ = 6021120.

The previous prime is 16213207. The next prime is 16213247. The reversal of 16213240 is 4231261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76735 + ... + 76945.

Almost surely, 2^16213240 is an apocalyptic number.

16213240 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 16213240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19576080).

16213240 is an abundant number, since it is smaller than the sum of its proper divisors (22938920).

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

16213240 is a wasteful number, since it uses less digits than its factorization.

16213240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16213240 is about 4026.5667758029. The cubic root of 16213240 is about 253.0987132180.

The spelling of 16213240 in words is "sixteen million, two hundred thirteen thousand, two hundred forty".