2778364224 has 84 divisors (see below), whose sum is σ = 8382853440. Its totient is φ = 877374720.

The previous prime is 2778364153. The next prime is 2778364229. The reversal of 2778364224 is 4224638772.

It is a super-2 number, since 2×2778364224² = 15438615522406244352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2778364224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778364229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115992 + ... + 137879.

Almost surely, 2^2778364224 is an apocalyptic number.

2778364224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2778364224 is an abundant number, since it is smaller than the sum of its proper divisors (5604489216).

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

2778364224 is a wasteful number, since it uses less digits than its factorization.

2778364224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253908 (or 253895 counting only the distinct ones).

The product of its digits is 903168, while the sum is 45.

The square root of 2778364224 is about 52710.1908932229. The cubic root of 2778364224 is about 1405.8200274554.

The spelling of 2778364224 in words is "two billion, seven hundred seventy-eight million, three hundred sixty-four thousand, two hundred twenty-four".