1071399560 has 128 divisors (see below), whose sum is σ = 3034506240. Its totient is φ = 330720000.

The previous prime is 1071399541. The next prime is 1071399583. The reversal of 1071399560 is 659931701.

1071399560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1071399560² = 2295794034336387200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327935 + ... + 331185.

It is an arithmetic number, because the mean of its divisors is an integer number (23707080).

Almost surely, 2^1071399560 is an apocalyptic number.

1071399560 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 1071399560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517253120).

1071399560 is an abundant number, since it is smaller than the sum of its proper divisors (1963106680).

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

1071399560 is a wasteful number, since it uses less digits than its factorization.

1071399560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 1071399560 is about 32732.2403755074. The cubic root of 1071399560 is about 1023.2548722560.

The spelling of 1071399560 in words is "one billion, seventy-one million, three hundred ninety-nine thousand, five hundred sixty".