1290873232 has 80 divisors (see below), whose sum is σ = 2833104384. Its totient is φ = 564480000.

The previous prime is 1290873203. The next prime is 1290873239. The reversal of 1290873232 is 2323780921.

It is a junction number, because it is equal to n+sod(n) for n = 1290873191 and 1290873200.

It is not an unprimeable number, because it can be changed into a prime (1290873239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074232 + ... + 1075432.

Almost surely, 2^1290873232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290873232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416552192).

1290873232 is an abundant number, since it is smaller than the sum of its proper divisors (1542231152).

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

1290873232 is a wasteful number, since it uses less digits than its factorization.

1290873232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1290873232 is about 35928.7243302625. The cubic root of 1290873232 is about 1088.8328083355.

The spelling of 1290873232 in words is "one billion, two hundred ninety million, eight hundred seventy-three thousand, two hundred thirty-two".