1056238680 has 128 divisors (see below), whose sum is σ = 3650273280. Its totient is φ = 239500800.

The previous prime is 1056238669. The next prime is 1056238681. The reversal of 1056238680 is 868326501.

It is a happy number.

It is a super-2 number, since 2×1056238680² = 2231280298256284800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056238681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101730 + ... + 111630.

It is an arithmetic number, because the mean of its divisors is an integer number (28517760).

Almost surely, 2^1056238680 is an apocalyptic number.

1056238680 is a gapful number since it is divisible by the number (10) 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 1056238680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1825136640).

1056238680 is an abundant number, since it is smaller than the sum of its proper divisors (2594034600).

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

1056238680 is a wasteful number, since it uses less digits than its factorization.

1056238680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10049 (or 10045 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1056238680 is about 32499.8258456872. The cubic root of 1056238680 is about 1018.4053899604.

The spelling of 1056238680 in words is "one billion, fifty-six million, two hundred thirty-eight thousand, six hundred eighty".