1223458560 has 144 divisors (see below), whose sum is σ = 4341701280. Its totient is φ = 326246400.

The previous prime is 1223458553. The next prime is 1223458589. The reversal of 1223458560 is 658543221.

1223458560 is a `hidden beast` number, since 12 + 2 + 3 + 4 + 585 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16860 + ... + 52260.

Almost surely, 2^1223458560 is an apocalyptic number.

1223458560 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 1223458560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2170850640).

1223458560 is an abundant number, since it is smaller than the sum of its proper divisors (3118242720).

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

1223458560 is an equidigital number, since it uses as much as digits as its factorization.

1223458560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35431 (or 35411 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1223458560 is about 34977.9724969873. The cubic root of 1223458560 is about 1069.5384972245.

The spelling of 1223458560 in words is "one billion, two hundred twenty-three million, four hundred fifty-eight thousand, five hundred sixty".