215940246 has 16 divisors (see below), whose sum is σ = 432505008. Its totient is φ = 71876000.

The previous prime is 215940233. The next prime is 215940247. The reversal of 215940246 is 642049512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215940247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21465 + ... + 29876.

It is an arithmetic number, because the mean of its divisors is an integer number (27031563).

Almost surely, 2^215940246 is an apocalyptic number.

215940246 is an abundant number, since it is smaller than the sum of its proper divisors (216564762).

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

215940246 is a wasteful number, since it uses less digits than its factorization.

215940246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52047.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 215940246 is about 14694.9054437244. The cubic root of 215940246 is about 599.9446671195.

Adding to 215940246 its reverse (642049512), we get a palindrome (857989758).

The spelling of 215940246 in words is "two hundred fifteen million, nine hundred forty thousand, two hundred forty-six".