215396 has 6 divisors (see below), whose sum is σ = 376950. Its totient is φ = 107696.

The previous prime is 215393. The next prime is 215399. The reversal of 215396 is 693512.

It is an interprime number because it is at equal distance from previous prime (215393) and next prime (215399).

It can be written as a sum of positive squares in only one way, i.e., 215296 + 100 = 464^2 + 10^2 .

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 as a sum of consecutive naturals, namely, 26921 + ... + 26928.

It is an arithmetic number, because the mean of its divisors is an integer number (62825).

2²¹⁵³⁹⁶ is an apocalyptic number.

It is an amenable number.

215396 is a deficient number, since it is larger than the sum of its proper divisors (161554).

215396 is a wasteful number, since it uses less digits than its factorization.

215396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53853 (or 53851 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 215396 is about 464.1077461107. The cubic root of 215396 is about 59.9440218645.

The spelling of 215396 in words is "two hundred fifteen thousand, three hundred ninety-six".