1123026720 has 48 divisors (see below), whose sum is σ = 3537535680. Its totient is φ = 299473664.

The previous prime is 1123026719. The next prime is 1123026721. The reversal of 1123026720 is 276203211.

It is an interprime number because it is at equal distance from previous prime (1123026719) and next prime (1123026721).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1123026720² = 2522378027667916800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1123026721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169340 + ... + 1170299.

It is an arithmetic number, because the mean of its divisors is an integer number (73698660).

Almost surely, 2^1123026720 is an apocalyptic number.

1123026720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123026720 is an abundant number, since it is smaller than the sum of its proper divisors (2414508960).

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

1123026720 is a wasteful number, since it uses less digits than its factorization.

1123026720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339657 (or 2339649 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1123026720 is about 33511.5908306365. The cubic root of 1123026720 is about 1039.4334685630.

Adding to 1123026720 its reverse (276203211), we get a palindrome (1399229931).

It can be divided in two parts, 11230 and 26720, that added together give a triangular number (37950 = T₂₇₅).

The spelling of 1123026720 in words is "one billion, one hundred twenty-three million, twenty-six thousand, seven hundred twenty".