215003128 has 16 divisors (see below), whose sum is σ = 403295760. Its totient is φ = 107457600.

The previous prime is 215003081. The next prime is 215003137. The reversal of 215003128 is 821300512.

It is a junction number, because it is equal to n+sod(n) for n = 215003099 and 215003108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25708 + ... + 33028.

It is an arithmetic number, because the mean of its divisors is an integer number (25205985).

Almost surely, 2^215003128 is an apocalyptic number.

It is an amenable number.

215003128 is a deficient number, since it is larger than the sum of its proper divisors (188292632).

215003128 is a wasteful number, since it uses less digits than its factorization.

215003128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10998 (or 10994 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 215003128 is about 14662.9849621419. The cubic root of 215003128 is about 599.0755467455.

The spelling of 215003128 in words is "two hundred fifteen million, three thousand, one hundred twenty-eight".