1293892056 has 80 divisors (see below), whose sum is σ = 3629666040. Its totient is φ = 430634880.

The previous prime is 1293892051. The next prime is 1293892069. The reversal of 1293892056 is 6502983921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293892051) 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 19 ways as a sum of consecutive naturals, for example, 606111 + ... + 608241.

Almost surely, 2^1293892056 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 1293892056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814833020).

1293892056 is an abundant number, since it is smaller than the sum of its proper divisors (2335773984).

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

1293892056 is a wasteful number, since it uses less digits than its factorization.

1293892056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086 (or 3073 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1293892056 is about 35970.7110855485. The cubic root of 1293892056 is about 1089.6809256008.

The spelling of 1293892056 in words is "one billion, two hundred ninety-three million, eight hundred ninety-two thousand, fifty-six".