2271515400 has 576 divisors, whose sum is σ = 9879367680. Its totient is φ = 471225600.

The previous prime is 2271515387. The next prime is 2271515423. The reversal of 2271515400 is 45151722.

2271515400 is a `hidden beast` number, since 2 + 2 + 71 + 51 + 540 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3741897 + ... + 3742503.

It is an arithmetic number, because the mean of its divisors is an integer number (17151680).

Almost surely, 2^2271515400 is an apocalyptic number.

2271515400 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 2271515400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4939683840).

2271515400 is an abundant number, since it is smaller than the sum of its proper divisors (7607852280).

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

2271515400 is a wasteful number, since it uses less digits than its factorization.

2271515400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 2271515400 is about 47660.4175390858. The cubic root of 2271515400 is about 1314.5342170083.

The spelling of 2271515400 in words is "two billion, two hundred seventy-one million, five hundred fifteen thousand, four hundred".