1274798720 has 128 divisors (see below), whose sum is σ = 3475437840. Its totient is φ = 442957824.

The previous prime is 1274798689. The next prime is 1274798729. The reversal of 1274798720 is 278974721.

It can be written as a sum of positive squares in 8 ways, for example, as 464143936 + 810654784 = 21544^2 + 28472^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1274798720² = 3250223553027276800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1274798729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136934 + ... + 145946.

Almost surely, 2^1274798720 is an apocalyptic number.

1274798720 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 1274798720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1737718920).

1274798720 is an abundant number, since it is smaller than the sum of its proper divisors (2200639120).

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

1274798720 is a wasteful number, since it uses less digits than its factorization.

1274798720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9062 (or 9050 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 1274798720 is about 35704.3235477162. The cubic root of 1274798720 is about 1084.2943786396.

The spelling of 1274798720 in words is "one billion, two hundred seventy-four million, seven hundred ninety-eight thousand, seven hundred twenty".