264819642 has 32 divisors (see below), whose sum is σ = 565963200. Its totient is φ = 82315008.

The previous prime is 264819623. The next prime is 264819649. The reversal of 264819642 is 246918462.

It is a junction number, because it is equal to n+sod(n) for n = 264819594 and 264819603.

It is not an unprimeable number, because it can be changed into a prime (264819649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792 + ... + 23027.

It is an arithmetic number, because the mean of its divisors is an integer number (17686350).

Almost surely, 2^264819642 is an apocalyptic number.

264819642 is an abundant number, since it is smaller than the sum of its proper divisors (301143558).

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

264819642 is a wasteful number, since it uses less digits than its factorization.

264819642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23950.

The product of its digits is 165888, while the sum is 42.

The square root of 264819642 is about 16273.2800012782. The cubic root of 264819642 is about 642.1700765420.

The spelling of 264819642 in words is "two hundred sixty-four million, eight hundred nineteen thousand, six hundred forty-two".