1283774420 has 48 divisors (see below), whose sum is σ = 2724814848. Its totient is φ = 508032000.

The previous prime is 1283774419. The next prime is 1283774447. The reversal of 1283774420 is 244773821.

It is a super-2 number, since 2×1283774420² = 3296153522892672800, 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 15 ways as a sum of consecutive naturals, for example, 1709045 + ... + 1709795.

It is an arithmetic number, because the mean of its divisors is an integer number (56766976).

Almost surely, 2^1283774420 is an apocalyptic number.

1283774420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1283774420 is an abundant number, since it is smaller than the sum of its proper divisors (1441040428).

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

1283774420 is a wasteful number, since it uses less digits than its factorization.

1283774420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 1283774420 is about 35829.7979341218. The cubic root of 1283774420 is about 1086.8332235364.

The spelling of 1283774420 in words is "one billion, two hundred eighty-three million, seven hundred seventy-four thousand, four hundred twenty".