215255200 has 36 divisors (see below), whose sum is σ = 525493710. Its totient is φ = 86101760.

The previous prime is 215255189. The next prime is 215255203. The reversal of 215255200 is 2552512.

It can be written as a sum of positive squares in 3 ways, for example, as 200845584 + 14409616 = 14172^2 + 3796^2 .

It is a super-2 number, since 2×215255200² = 92669602254080000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215255203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133735 + ... + 135334.

Almost surely, 2^215255200 is an apocalyptic number.

215255200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215255200 is an abundant number, since it is smaller than the sum of its proper divisors (310238510).

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

215255200 is a wasteful number, since it uses less digits than its factorization.

215255200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269089 (or 269076 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 215255200 is about 14671.5779655768. The cubic root of 215255200 is about 599.3095762001.

The spelling of 215255200 in words is "two hundred fifteen million, two hundred fifty-five thousand, two hundred".