215438934 has 8 divisors (see below), whose sum is σ = 430877880. Its totient is φ = 71812976.

The previous prime is 215438903. The next prime is 215438947. The reversal of 215438934 is 439834512.

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

215438934 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 215438892 and 215438901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17953239 + ... + 17953250.

It is an arithmetic number, because the mean of its divisors is an integer number (53859735).

Almost surely, 2^215438934 is an apocalyptic number.

215438934 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.

215438934 is a wasteful number, since it uses less digits than its factorization.

215438934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35906494.

The product of its digits is 103680, while the sum is 39.

The square root of 215438934 is about 14677.8381923225. The cubic root of 215438934 is about 599.4800439842.

The spelling of 215438934 in words is "two hundred fifteen million, four hundred thirty-eight thousand, nine hundred thirty-four".