2778412812 has 48 divisors (see below), whose sum is σ = 7474693632. Its totient is φ = 786804480.

The previous prime is 2778412787. The next prime is 2778412823. The reversal of 2778412812 is 2182148772.

2778412812 is digitally balanced in base 2 and base 4, because in such bases 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 (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136864 + ... + 155847.

It is an arithmetic number, because the mean of its divisors is an integer number (155722784).

Almost surely, 2^2778412812 is an apocalyptic number.

It is an amenable number.

2778412812 is an abundant number, since it is smaller than the sum of its proper divisors (4696280820).

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

2778412812 is a wasteful number, since it uses less digits than its factorization.

2778412812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292838 (or 292836 counting only the distinct ones).

The product of its digits is 100352, while the sum is 42.

The square root of 2778412812 is about 52710.6517887988. The cubic root of 2778412812 is about 1405.8282223955.

The spelling of 2778412812 in words is "two billion, seven hundred seventy-eight million, four hundred twelve thousand, eight hundred twelve".