2778572072 has 32 divisors (see below), whose sum is σ = 5525447400. Its totient is φ = 1305391104.

The previous prime is 2778572059. The next prime is 2778572107. The reversal of 2778572072 is 2702758772.

It can be written as a sum of positive squares in 4 ways, for example, as 2127607876 + 650964196 = 46126^2 + 25514^2 .

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, 66704 + ... + 100032.

Almost surely, 2^2778572072 is an apocalyptic number.

It is an amenable number.

2778572072 is a deficient number, since it is larger than the sum of its proper divisors (2746875328).

2778572072 is a wasteful number, since it uses less digits than its factorization.

2778572072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33965 (or 33961 counting only the distinct ones).

The product of its (nonzero) digits is 768320, while the sum is 47.

The square root of 2778572072 is about 52712.1624674989. The cubic root of 2778572072 is about 1405.8550828059.

The spelling of 2778572072 in words is "two billion, seven hundred seventy-eight million, five hundred seventy-two thousand, seventy-two".