1143422772 has 12 divisors (see below), whose sum is σ = 2667986496. Its totient is φ = 381140920.

The previous prime is 1143422747. The next prime is 1143422789. The reversal of 1143422772 is 2772243411.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47642604 + ... + 47642627.

It is an arithmetic number, because the mean of its divisors is an integer number (222332208).

Almost surely, 2^1143422772 is an apocalyptic number.

1143422772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143422772 is an abundant number, since it is smaller than the sum of its proper divisors (1524563724).

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

1143422772 is a wasteful number, since it uses less digits than its factorization.

1143422772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95285238 (or 95285236 counting only the distinct ones).

The product of its digits is 18816, while the sum is 33.

The square root of 1143422772 is about 33814.5349221307. The cubic root of 1143422772 is about 1045.6883728643.

The spelling of 1143422772 in words is "one billion, one hundred forty-three million, four hundred twenty-two thousand, seven hundred seventy-two".