2775672820 has 12 divisors (see below), whose sum is σ = 5828912964. Its totient is φ = 1110269120.

The previous prime is 2775672811. The next prime is 2775672859. The reversal of 2775672820 is 282765772.

It can be written as a sum of positive squares in 2 ways, for example, as 1268214544 + 1507458276 = 35612^2 + 38826^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69391801 + ... + 69391840.

It is an arithmetic number, because the mean of its divisors is an integer number (485742747).

Almost surely, 2^2775672820 is an apocalyptic number.

2775672820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2775672820 is an abundant number, since it is smaller than the sum of its proper divisors (3053240144).

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

2775672820 is a wasteful number, since it uses less digits than its factorization.

2775672820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138783650 (or 138783648 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 46.

The square root of 2775672820 is about 52684.6545020464. The cubic root of 2775672820 is about 1405.3659410778.

It can be divided in two parts, 27756 and 72820, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 2775672820 in words is "two billion, seven hundred seventy-five million, six hundred seventy-two thousand, eight hundred twenty".