1274428660 has 24 divisors (see below), whose sum is σ = 2693353320. Its totient is φ = 506523264.

The previous prime is 1274428651. The next prime is 1274428679. The reversal of 1274428660 is 668244721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 396965776 + 877462884 = 19924^2 + 29622^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199795 + ... + 206074.

It is an arithmetic number, because the mean of its divisors is an integer number (112223055).

Almost surely, 2^1274428660 is an apocalyptic number.

1274428660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1274428660 is an abundant number, since it is smaller than the sum of its proper divisors (1418924660).

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

1274428660 is a wasteful number, since it uses less digits than its factorization.

1274428660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406035 (or 406033 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 1274428660 is about 35699.1408860213. The cubic root of 1274428660 is about 1084.1894489216.

The spelling of 1274428660 in words is "one billion, two hundred seventy-four million, four hundred twenty-eight thousand, six hundred sixty".