215936946 has 48 divisors (see below), whose sum is σ = 480168000. Its totient is φ = 70106400.

The previous prime is 215936933. The next prime is 215936947. The reversal of 215936946 is 649639512.

It is not an unprimeable number, because it can be changed into a prime (215936947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143305 + ... + 144803.

It is an arithmetic number, because the mean of its divisors is an integer number (10003500).

Almost surely, 2^215936946 is an apocalyptic number.

215936946 is an abundant number, since it is smaller than the sum of its proper divisors (264231054).

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

215936946 is a wasteful number, since it uses less digits than its factorization.

215936946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1708 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 215936946 is about 14694.7931594834. The cubic root of 215936946 is about 599.9416109847.

The spelling of 215936946 in words is "two hundred fifteen million, nine hundred thirty-six thousand, nine hundred forty-six".