215161074 has 12 divisors (see below), whose sum is σ = 466182366. Its totient is φ = 71720352.

The previous prime is 215161069. The next prime is 215161097. The reversal of 215161074 is 470161512.

It is a happy number.

215161074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 143640225 + 71520849 = 11985^2 + 8457^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5976679 + ... + 5976714.

Almost surely, 2^215161074 is an apocalyptic number.

215161074 is an abundant number, since it is smaller than the sum of its proper divisors (251021292).

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

215161074 is a wasteful number, since it uses less digits than its factorization.

215161074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11953401 (or 11953398 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 215161074 is about 14668.3698480779. The cubic root of 215161074 is about 599.2222088372. Note that the first 4 decimals are identical.

The spelling of 215161074 in words is "two hundred fifteen million, one hundred sixty-one thousand, seventy-four".