1346273280 has 384 divisors, whose sum is σ = 5152623840. Its totient is φ = 322437120.

The previous prime is 1346273261. The next prime is 1346273287. The reversal of 1346273280 is 823726431.

It is a happy number.

1346273280 is a `hidden beast` number, since 1 + 3 + 4 + 627 + 3 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1346273287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16220119 + ... + 16220201.

Almost surely, 2^1346273280 is an apocalyptic number.

1346273280 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 1346273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2576311920).

1346273280 is an abundant number, since it is smaller than the sum of its proper divisors (3806350560).

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

1346273280 is an equidigital number, since it uses as much as digits as its factorization.

1346273280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1346273280 is about 36691.5968581363. The cubic root of 1346273280 is about 1104.1915231681.

The spelling of 1346273280 in words is "one billion, three hundred forty-six million, two hundred seventy-three thousand, two hundred eighty".