215120034 has 24 divisors (see below), whose sum is σ = 476012160. Its totient is φ = 70180728.

The previous prime is 215119997. The next prime is 215120039. The reversal of 215120034 is 430021512.

It is a super-2 number, since 2×215120034² = 92553258056322312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 215119989 and 215120016.

It is not an unprimeable number, because it can be changed into a prime (215120039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126294 + ... + 127985.

It is an arithmetic number, because the mean of its divisors is an integer number (19833840).

Almost surely, 2^215120034 is an apocalyptic number.

215120034 is an abundant number, since it is smaller than the sum of its proper divisors (260892126).

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

215120034 is a wasteful number, since it uses less digits than its factorization.

215120034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254334 (or 254331 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 215120034 is about 14666.9708529062. The cubic root of 215120034 is about 599.1841077025.

Adding to 215120034 its reverse (430021512), we get a palindrome (645141546).

The spelling of 215120034 in words is "two hundred fifteen million, one hundred twenty thousand, thirty-four".