215940248 has 8 divisors (see below), whose sum is σ = 404887980. Its totient is φ = 107970120.

The previous prime is 215940247. The next prime is 215940271. The reversal of 215940248 is 842049512.

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13496258 + ... + 13496273.

Almost surely, 2^215940248 is an apocalyptic number.

It is an amenable number.

215940248 is a deficient number, since it is larger than the sum of its proper divisors (188947732).

215940248 is a wasteful number, since it uses less digits than its factorization.

215940248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26992537 (or 26992533 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 215940248 is about 14694.9055117752. The cubic root of 215940248 is about 599.9446689717.

The spelling of 215940248 in words is "two hundred fifteen million, nine hundred forty thousand, two hundred forty-eight".