1283203376 has 120 divisors (see below), whose sum is σ = 3140736480. Its totient is φ = 503387136.

The previous prime is 1283203357. The next prime is 1283203387. The reversal of 1283203376 is 6733023821.

It is a super-2 number, since 2×1283203376² = 3293221808355594752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1395845 + ... + 1396763.

It is an arithmetic number, because the mean of its divisors is an integer number (26172804).

Almost surely, 2^1283203376 is an apocalyptic number.

1283203376 is a gapful number since it is divisible by the number (16) 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 1283203376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570368240).

1283203376 is an abundant number, since it is smaller than the sum of its proper divisors (1857533104).

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

1283203376 is a wasteful number, since it uses less digits than its factorization.

1283203376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 1283203376 is about 35821.8282057184. The cubic root of 1283203376 is about 1086.6720525325.

The spelling of 1283203376 in words is "one billion, two hundred eighty-three million, two hundred three thousand, three hundred seventy-six".