2273256172 has 48 divisors (see below), whose sum is σ = 4471034400. Its totient is φ = 1002240000.

The previous prime is 2273256169. The next prime is 2273256173. The reversal of 2273256172 is 2716523722.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (2273256173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566172 + ... + 570172.

It is an arithmetic number, because the mean of its divisors is an integer number (93146550).

Almost surely, 2^2273256172 is an apocalyptic number.

2273256172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2273256172 is a deficient number, since it is larger than the sum of its proper divisors (2197778228).

2273256172 is a wasteful number, since it uses less digits than its factorization.

2273256172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402 (or 4400 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 2273256172 is about 47678.6762819607. The cubic root of 2273256172 is about 1314.8699282931.

Adding to 2273256172 its reverse (2716523722), we get a palindrome (4989779894).

The spelling of 2273256172 in words is "two billion, two hundred seventy-three million, two hundred fifty-six thousand, one hundred seventy-two".