2788567820 has 24 divisors (see below), whose sum is σ = 5857517904. Its totient is φ = 1115136576.

The previous prime is 2788567781. The next prime is 2788567853. The reversal of 2788567820 is 287658872.

It is a super-2 number, since 2×2788567820² = 15552220973479104800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71282 + ... + 103238.

It is an arithmetic number, because the mean of its divisors is an integer number (244063246).

Almost surely, 2^2788567820 is an apocalyptic number.

2788567820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2788567820 is an abundant number, since it is smaller than the sum of its proper divisors (3068950084).

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

2788567820 is a wasteful number, since it uses less digits than its factorization.

2788567820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36329 (or 36327 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The square root of 2788567820 is about 52806.8917850691. The cubic root of 2788567820 is about 1407.5388920032.

The spelling of 2788567820 in words is "two billion, seven hundred eighty-eight million, five hundred sixty-seven thousand, eight hundred twenty".