2566572428 has 24 divisors (see below), whose sum is σ = 5242363392. Its totient is φ = 1076555664.

The previous prime is 2566572403. The next prime is 2566572457. The reversal of 2566572428 is 8242756652.

It is a happy number.

2566572428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973826 + ... + 976457.

It is an arithmetic number, because the mean of its divisors is an integer number (218431808).

Almost surely, 2^2566572428 is an apocalyptic number.

2566572428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2566572428 is an abundant number, since it is smaller than the sum of its proper divisors (2675790964).

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

2566572428 is a wasteful number, since it uses less digits than its factorization.

2566572428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950341 (or 1950339 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The square root of 2566572428 is about 50661.3504360079. The cubic root of 2566572428 is about 1369.1504541728.

The spelling of 2566572428 in words is "two billion, five hundred sixty-six million, five hundred seventy-two thousand, four hundred twenty-eight".