215133126 has 16 divisors (see below), whose sum is σ = 463363824. Its totient is φ = 66194784.

The previous prime is 215133103. The next prime is 215133137. The reversal of 215133126 is 621331512.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215133096 and 215133105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378981 + ... + 1379136.

It is an arithmetic number, because the mean of its divisors is an integer number (28960239).

Almost surely, 2^215133126 is an apocalyptic number.

215133126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

215133126 is an abundant number, since it is smaller than the sum of its proper divisors (248230698).

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

215133126 is a wasteful number, since it uses less digits than its factorization.

215133126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758135.

The product of its digits is 1080, while the sum is 24.

The square root of 215133126 is about 14667.4171550413. The cubic root of 215133126 is about 599.1962627136.

Adding to 215133126 its reverse (621331512), we get a palindrome (836464638).

The spelling of 215133126 in words is "two hundred fifteen million, one hundred thirty-three thousand, one hundred twenty-six".