1274923820 has 12 divisors (see below), whose sum is σ = 2677340064. Its totient is φ = 509969520.

The previous prime is 1274923817. The next prime is 1274923829. The reversal of 1274923820 is 283294721.

It is not an unprimeable number, because it can be changed into a prime (1274923829) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31873076 + ... + 31873115.

It is an arithmetic number, because the mean of its divisors is an integer number (223111672).

Almost surely, 2^1274923820 is an apocalyptic number.

1274923820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1274923820 is an abundant number, since it is smaller than the sum of its proper divisors (1402416244).

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

1274923820 is a wasteful number, since it uses less digits than its factorization.

1274923820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63746200 (or 63746198 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1274923820 is about 35706.0753934117. The cubic root of 1274923820 is about 1084.3298458831.

The spelling of 1274923820 in words is "one billion, two hundred seventy-four million, nine hundred twenty-three thousand, eight hundred twenty".