2765630388 has 24 divisors (see below), whose sum is σ = 6453996192. Its totient is φ = 921754144.

The previous prime is 2765630339. The next prime is 2765630389. The reversal of 2765630388 is 8830365672.

It is a super-2 number, since 2×2765630388² = 15297422886058061088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2765630389) 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, 149506 + ... + 166982.

It is an arithmetic number, because the mean of its divisors is an integer number (268916508).

Almost surely, 2^2765630388 is an apocalyptic number.

It is an amenable number.

2765630388 is an abundant number, since it is smaller than the sum of its proper divisors (3688365804).

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

2765630388 is a wasteful number, since it uses less digits than its factorization.

2765630388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30671 (or 30669 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The square root of 2765630388 is about 52589.2611471201. The cubic root of 2765630388 is about 1403.6690135434.

The spelling of 2765630388 in words is "two billion, seven hundred sixty-five million, six hundred thirty thousand, three hundred eighty-eight".