215746134 has 16 divisors (see below), whose sum is σ = 431744688. Its totient is φ = 71873312.

The previous prime is 215745991. The next prime is 215746163. The reversal of 215746134 is 431647512.

It is a junction number, because it is equal to n+sod(n) for n = 215746095 and 215746104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684 + ... + 20840.

It is an arithmetic number, because the mean of its divisors is an integer number (26984043).

Almost surely, 2^215746134 is an apocalyptic number.

215746134 is an abundant number, since it is smaller than the sum of its proper divisors (215998554).

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

215746134 is a wasteful number, since it uses less digits than its factorization.

215746134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21039.

The product of its digits is 20160, while the sum is 33.

The square root of 215746134 is about 14688.2992208084. The cubic root of 215746134 is about 599.7648467392.

The spelling of 215746134 in words is "two hundred fifteen million, seven hundred forty-six thousand, one hundred thirty-four".