1274821928 has 16 divisors (see below), whose sum is σ = 2467397760. Its totient is φ = 616849200.

The previous prime is 1274821927. The next prime is 1274821957. The reversal of 1274821928 is 8291284721.

It is not an unprimeable number, because it can be changed into a prime (1274821927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2569958 + ... + 2570453.

It is an arithmetic number, because the mean of its divisors is an integer number (154212360).

Almost surely, 2^1274821928 is an apocalyptic number.

It is an amenable number.

1274821928 is a deficient number, since it is larger than the sum of its proper divisors (1192575832).

1274821928 is a wasteful number, since it uses less digits than its factorization.

1274821928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140448 (or 5140444 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 1274821928 is about 35704.6485488935. The cubic root of 1274821928 is about 1084.3009585414.

The spelling of 1274821928 in words is "one billion, two hundred seventy-four million, eight hundred twenty-one thousand, nine hundred twenty-eight".