215065136 has 40 divisors (see below), whose sum is σ = 489541584. Its totient is φ = 90236160.

The previous prime is 215065093. The next prime is 215065139. The reversal of 215065136 is 631560512.

It is a junction number, because it is equal to n+sod(n) for n = 215065099 and 215065108.

It is not an unprimeable number, because it can be changed into a prime (215065139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44711 + ... + 49286.

Almost surely, 2^215065136 is an apocalyptic number.

215065136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

215065136 is an abundant number, since it is smaller than the sum of its proper divisors (274476448).

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

215065136 is a wasteful number, since it uses less digits than its factorization.

215065136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94029 (or 94023 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 215065136 is about 14665.0992495789. The cubic root of 215065136 is about 599.1331333587.

The spelling of 215065136 in words is "two hundred fifteen million, sixty-five thousand, one hundred thirty-six".