2772667820 has 24 divisors (see below), whose sum is σ = 6270495504. Its totient is φ = 1023754176.

The previous prime is 2772667801. The next prime is 2772667829. The reversal of 2772667820 is 287662772.

It is not an unprimeable number, because it can be changed into a prime (2772667829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5331794 + ... + 5332313.

It is an arithmetic number, because the mean of its divisors is an integer number (261270646).

Almost surely, 2^2772667820 is an apocalyptic number.

2772667820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2772667820 is an abundant number, since it is smaller than the sum of its proper divisors (3497827684).

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

2772667820 is a wasteful number, since it uses less digits than its factorization.

2772667820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10664129 (or 10664127 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 2772667820 is about 52656.1280384344. The cubic root of 2772667820 is about 1404.8585986714.

The spelling of 2772667820 in words is "two billion, seven hundred seventy-two million, six hundred sixty-seven thousand, eight hundred twenty".