2772172800 has 342 divisors, whose sum is σ = 10141807728. Its totient is φ = 723517440.

The previous prime is 2772172787. The next prime is 2772172873. The reversal of 2772172800 is 82712772.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 58982377 + ... + 58982423.

Almost surely, 2^2772172800 is an apocalyptic number.

2772172800 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 2772172800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5070903864).

2772172800 is an abundant number, since it is smaller than the sum of its proper divisors (7369634928).

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

2772172800 is an frugal number, since it uses more digits than its factorization.

2772172800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 2772172800 is about 52651.4273310800. The cubic root of 2772172800 is about 1404.7749879230.

The spelling of 2772172800 in words is "two billion, seven hundred seventy-two million, one hundred seventy-two thousand, eight hundred".