215190 has 32 divisors (see below), whose sum is σ = 574560. Its totient is φ = 57312.

The previous prime is 215183. The next prime is 215191. The reversal of 215190 is 91512.

It is a super-2 number, since 2×215190² = 92613472200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215191) 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, 129 + ... + 668.

It is an arithmetic number, because the mean of its divisors is an integer number (17955).

2²¹⁵¹⁹⁰ is an apocalyptic number.

215190 is an abundant number, since it is smaller than the sum of its proper divisors (359370).

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

215190 is a wasteful number, since it uses less digits than its factorization.

215190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 215190 is about 463.8857617992. The cubic root of 215190 is about 59.9249060542.

The spelling of 215190 in words is "two hundred fifteen thousand, one hundred ninety".