2528319444 has 36 divisors (see below), whose sum is σ = 6862582944. Its totient is φ = 722376816.

The previous prime is 2528319347. The next prime is 2528319481. The reversal of 2528319444 is 4449138252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2528319396 and 2528319405.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2149344 + ... + 2150519.

It is an arithmetic number, because the mean of its divisors is an integer number (190627304).

Almost surely, 2^2528319444 is an apocalyptic number.

It is an amenable number.

2528319444 is an abundant number, since it is smaller than the sum of its proper divisors (4334263500).

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

2528319444 is a wasteful number, since it uses less digits than its factorization.

2528319444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299884 (or 4299875 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 2528319444 is about 50282.3969595722. The cubic root of 2528319444 is about 1362.3142984460.

The spelling of 2528319444 in words is "two billion, five hundred twenty-eight million, three hundred nineteen thousand, four hundred forty-four".