2773921920 has 512 divisors, whose sum is σ = 11421388800. Its totient is φ = 555663360.

The previous prime is 2773921919. The next prime is 2773921921. The reversal of 2773921920 is 291293772.

It is an interprime number because it is at equal distance from previous prime (2773921919) and next prime (2773921921).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2773921921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4287037 + ... + 4287683.

It is an arithmetic number, because the mean of its divisors is an integer number (22307400).

Almost surely, 2^2773921920 is an apocalyptic number.

2773921920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2773921920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5710694400).

2773921920 is an abundant number, since it is smaller than the sum of its proper divisors (8647466880).

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

2773921920 is a wasteful number, since it uses less digits than its factorization.

2773921920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 2773921920 is about 52668.0350877076. The cubic root of 2773921920 is about 1405.0703763670.

The spelling of 2773921920 in words is "two billion, seven hundred seventy-three million, nine hundred twenty-one thousand, nine hundred twenty".