215394 has 8 divisors (see below), whose sum is σ = 430800. Its totient is φ = 71796.

The previous prime is 215393. The next prime is 215399. The reversal of 215394 is 493512.

It is a sphenic number, since it is the product of 3 distinct primes.

215394 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17944 + ... + 17955.

It is an arithmetic number, because the mean of its divisors is an integer number (53850).

2²¹⁵³⁹⁴ is an apocalyptic number.

215394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

215394 is a wasteful number, since it uses less digits than its factorization.

215394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35904.

The product of its digits is 1080, while the sum is 24.

The square root of 215394 is about 464.1055914337. The cubic root of 215394 is about 59.9438363327.

The spelling of 215394 in words is "two hundred fifteen thousand, three hundred ninety-four".