1123487680 has 168 divisors, whose sum is σ = 3140799408. Its totient is φ = 381652992.

The previous prime is 1123487639. The next prime is 1123487711. The reversal of 1123487680 is 867843211.

It is a super-2 number, since 2×1123487680² = 2524449134223564800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2147899 + ... + 2148421.

Almost surely, 2^1123487680 is an apocalyptic number.

1123487680 is a gapful number since it is divisible by the number (10) 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 1123487680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570399704).

1123487680 is an abundant number, since it is smaller than the sum of its proper divisors (2017311728).

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

1123487680 is a wasteful number, since it uses less digits than its factorization.

1123487680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1123487680 is about 33518.4677454086. The cubic root of 1123487680 is about 1039.5756651532.

The spelling of 1123487680 in words is "one billion, one hundred twenty-three million, four hundred eighty-seven thousand, six hundred eighty".