215038190 has 32 divisors (see below), whose sum is σ = 403051680. Its totient is φ = 82502784.

The previous prime is 215038189. The next prime is 215038273. The reversal of 215038190 is 91830512.

It is a super-2 number, since 2×215038190² = 92482846316952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43169 + ... + 47891.

It is an arithmetic number, because the mean of its divisors is an integer number (12595365).

Almost surely, 2^215038190 is an apocalyptic number.

215038190 is a deficient number, since it is larger than the sum of its proper divisors (188013490).

215038190 is a wasteful number, since it uses less digits than its factorization.

215038190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 215038190 is about 14664.1805089817. The cubic root of 215038190 is about 599.1081100627.

The spelling of 215038190 in words is "two hundred fifteen million, thirty-eight thousand, one hundred ninety".