215973748 has 12 divisors (see below), whose sum is σ = 384360480. Its totient is φ = 106156472.

The previous prime is 215973743. The next prime is 215973761. The reversal of 215973748 is 847379512.

It is a junction number, because it is equal to n+sod(n) for n = 215973698 and 215973707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215973743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457336 + ... + 457807.

It is an arithmetic number, because the mean of its divisors is an integer number (32030040).

Almost surely, 2^215973748 is an apocalyptic number.

It is an amenable number.

215973748 is a deficient number, since it is larger than the sum of its proper divisors (168386732).

215973748 is a wasteful number, since it uses less digits than its factorization.

215973748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915206 (or 915204 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The square root of 215973748 is about 14696.0453183841. The cubic root of 215973748 is about 599.9756916078.

The spelling of 215973748 in words is "two hundred fifteen million, nine hundred seventy-three thousand, seven hundred forty-eight".