1349246720 has 72 divisors (see below), whose sum is σ = 3265486224. Its totient is φ = 534085632.

The previous prime is 1349246713. The next prime is 1349246741. The reversal of 1349246720 is 276429431.

It is a super-2 number, since 2×1349246720² = 3640933422861516800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118727 + ... + 129593.

Almost surely, 2^1349246720 is an apocalyptic number.

1349246720 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 1349246720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632743112).

1349246720 is an abundant number, since it is smaller than the sum of its proper divisors (1916239504).

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

1349246720 is an equidigital number, since it uses as much as digits as its factorization.

1349246720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10985 (or 10971 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 1349246720 is about 36732.0938689860. The cubic root of 1349246720 is about 1105.0038478467.

The spelling of 1349246720 in words is "one billion, three hundred forty-nine million, two hundred forty-six thousand, seven hundred twenty".