2572802778 has 64 divisors (see below), whose sum is σ = 6537388032. Its totient is φ = 656648640.

The previous prime is 2572802761. The next prime is 2572802783. The reversal of 2572802778 is 8772082752.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59076 + ... + 92927.

It is an arithmetic number, because the mean of its divisors is an integer number (102146688).

Almost surely, 2^2572802778 is an apocalyptic number.

2572802778 is an abundant number, since it is smaller than the sum of its proper divisors (3964585254).

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

2572802778 is a wasteful number, since it uses less digits than its factorization.

2572802778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152059.

The product of its (nonzero) digits is 878080, while the sum is 48.

The square root of 2572802778 is about 50722.8033334121. The cubic root of 2572802778 is about 1370.2574290256.

The spelling of 2572802778 in words is "two billion, five hundred seventy-two million, eight hundred two thousand, seven hundred seventy-eight".