2564223988 has 48 divisors (see below), whose sum is σ = 4675277376. Its totient is φ = 1229679360.

The previous prime is 2564223967. The next prime is 2564224027. The reversal of 2564223988 is 8893224652.

Its product of digits (1658880) is a multiple of the sum of its prime factors (1024).

It is a congruent number.

It is an unprimeable number.

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, 5562078 + ... + 5562538.

It is an arithmetic number, because the mean of its divisors is an integer number (97401612).

Almost surely, 2^2564223988 is an apocalyptic number.

It is an amenable number.

2564223988 is a deficient number, since it is larger than the sum of its proper divisors (2111053388).

2564223988 is a wasteful number, since it uses less digits than its factorization.

2564223988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1022 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 2564223988 is about 50638.1673049094. The cubic root of 2564223988 is about 1368.7327311875.

The spelling of 2564223988 in words is "two billion, five hundred sixty-four million, two hundred twenty-three thousand, nine hundred eighty-eight".