215351136 has 480 divisors, whose sum is σ = 860606208. Its totient is φ = 51010560.

The previous prime is 215351117. The next prime is 215351153. The reversal of 215351136 is 631153512.

It is a super-2 number, since 2×215351136² = 92752223552980992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2594551 + ... + 2594633.

Almost surely, 2^215351136 is an apocalyptic number.

215351136 is a gapful number since it is divisible by the number (26) 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 215351136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430303104).

215351136 is an abundant number, since it is smaller than the sum of its proper divisors (645255072).

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

215351136 is a wasteful number, since it uses less digits than its factorization.

215351136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 119 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 215351136 is about 14674.8470520139. The cubic root of 215351136 is about 599.3985973929.

The spelling of 215351136 in words is "two hundred fifteen million, three hundred fifty-one thousand, one hundred thirty-six".