215234620 has 48 divisors (see below), whose sum is σ = 488799360. Its totient is φ = 79299584.

The previous prime is 215234609. The next prime is 215234623. The reversal of 215234620 is 26432512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215234623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9246 + ... + 22714.

It is an arithmetic number, because the mean of its divisors is an integer number (10183320).

Almost surely, 2^215234620 is an apocalyptic number.

215234620 is a gapful number since it is divisible by the number (20) 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 215234620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244399680).

215234620 is an abundant number, since it is smaller than the sum of its proper divisors (273564740).

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

215234620 is a wasteful number, since it uses less digits than its factorization.

215234620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13542 (or 13540 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 215234620 is about 14670.8765927602. The cubic root of 215234620 is about 599.2904761053.

The spelling of 215234620 in words is "two hundred fifteen million, two hundred thirty-four thousand, six hundred twenty".