215038650 has 24 divisors (see below), whose sum is σ = 533296224. Its totient is φ = 57343600.

The previous prime is 215038643. The next prime is 215038651. The reversal of 215038650 is 56830512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (215038651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716646 + ... + 716945.

It is an arithmetic number, because the mean of its divisors is an integer number (22220676).

Almost surely, 2^215038650 is an apocalyptic number.

215038650 is an abundant number, since it is smaller than the sum of its proper divisors (318257574).

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

215038650 is a wasteful number, since it uses less digits than its factorization.

215038650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433606 (or 1433601 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 215038650 is about 14664.1961934502. The cubic root of 215038650 is about 599.1085372574.

The spelling of 215038650 in words is "two hundred fifteen million, thirty-eight thousand, six hundred fifty".