1123047072 has 288 divisors, whose sum is σ = 3909306240. Its totient is φ = 312560640.

The previous prime is 1123047071. The next prime is 1123047073. The reversal of 1123047072 is 2707403211.

It is a happy number.

1123047072 is a `hidden beast` number, since 1 + 123 + 0 + 470 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (1123047071) and next prime (1123047073).

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×1123047072² = 2522469451855546368, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1123047071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1735453 + ... + 1736099.

It is an arithmetic number, because the mean of its divisors is an integer number (13573980).

Almost surely, 2^1123047072 is an apocalyptic number.

1123047072 is a gapful number since it is divisible by the number (12) 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 1123047072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1954653120).

1123047072 is an abundant number, since it is smaller than the sum of its proper divisors (2786259168).

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

1123047072 is a wasteful number, since it uses less digits than its factorization.

1123047072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1123047072 is about 33511.8944853913. The cubic root of 1123047072 is about 1039.4397475535.

The spelling of 1123047072 in words is "one billion, one hundred twenty-three million, forty-seven thousand, seventy-two".