2772887040 has 640 divisors, whose sum is σ = 12303498240. Its totient is φ = 575078400.

The previous prime is 2772887023. The next prime is 2772887053. The reversal of 2772887040 is 407882772.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5321980 + ... + 5322500.

It is an arithmetic number, because the mean of its divisors is an integer number (19224216).

Almost surely, 2^2772887040 is an apocalyptic number.

2772887040 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 2772887040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6151749120).

2772887040 is an abundant number, since it is smaller than the sum of its proper divisors (9530611200).

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

2772887040 is a wasteful number, since it uses less digits than its factorization.

2772887040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 2772887040 is about 52658.2096163552. The cubic root of 2772887040 is about 1404.8956225783.

The spelling of 2772887040 in words is "two billion, seven hundred seventy-two million, eight hundred eighty-seven thousand, forty".