215236047 has 64 divisors (see below), whose sum is σ = 346106880. Its totient is φ = 117697536.

The previous prime is 215236039. The next prime is 215236051. The reversal of 215236047 is 740632512.

It is not a de Polignac number, because 215236047 - 2³ = 215236039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215235047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1244053 + ... + 1244225.

It is an arithmetic number, because the mean of its divisors is an integer number (5407920).

Almost surely, 2^215236047 is an apocalyptic number.

215236047 is a deficient number, since it is larger than the sum of its proper divisors (130870833).

215236047 is a wasteful number, since it uses less digits than its factorization.

215236047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 215236047 is about 14670.9252264470. The cubic root of 215236047 is about 599.2918005292.

Adding to 215236047 its reverse (740632512), we get a palindrome (955868559).

The spelling of 215236047 in words is "two hundred fifteen million, two hundred thirty-six thousand, forty-seven".