215190769 has 8 divisors (see below), whose sum is σ = 220026240. Its totient is φ = 210366096.

The previous prime is 215190733. The next prime is 215190821. The reversal of 215190769 is 967091512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215190769 - 2¹⁹ = 214666481 is a prime.

It is a super-2 number, since 2×215190769² = 92614134125622722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215190869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48102 + ... + 52384.

It is an arithmetic number, because the mean of its divisors is an integer number (27503280).

Almost surely, 2^215190769 is an apocalyptic number.

It is an amenable number.

215190769 is a deficient number, since it is larger than the sum of its proper divisors (4835471).

215190769 is a wasteful number, since it uses less digits than its factorization.

215190769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 215190769 is about 14669.3820251570. The cubic root of 215190769 is about 599.2497743638.

The spelling of 215190769 in words is "two hundred fifteen million, one hundred ninety thousand, seven hundred sixty-nine".