264216090 has 32 divisors (see below), whose sum is σ = 667494720. Its totient is φ = 66749184.

The previous prime is 264216089. The next prime is 264216097. The reversal of 264216090 is 90612462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (264216097) 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 15 ways as a sum of consecutive naturals, for example, 231199 + ... + 232338.

It is an arithmetic number, because the mean of its divisors is an integer number (20859210).

Almost surely, 2^264216090 is an apocalyptic number.

264216090 is an abundant number, since it is smaller than the sum of its proper divisors (403278630).

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

264216090 is a wasteful number, since it uses less digits than its factorization.

264216090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463566.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 264216090 is about 16254.7251591653. The cubic root of 264216090 is about 641.6818475822.

The spelling of 264216090 in words is "two hundred sixty-four million, two hundred sixteen thousand, ninety".