1056321688 has 16 divisors (see below), whose sum is σ = 1984644360. Its totient is φ = 527083200.

The previous prime is 1056321671. The next prime is 1056321691. The reversal of 1056321688 is 8861236501.

It is a super-2 number, since 2×1056321688² = 2231631017078338688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056321688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130533 + ... + 138388.

Almost surely, 2^1056321688 is an apocalyptic number.

It is an amenable number.

1056321688 is a deficient number, since it is larger than the sum of its proper divisors (928322672).

1056321688 is a wasteful number, since it uses less digits than its factorization.

1056321688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269418 (or 269414 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1056321688 is about 32501.1028735949. The cubic root of 1056321688 is about 1018.4320675103.

The spelling of 1056321688 in words is "one billion, fifty-six million, three hundred twenty-one thousand, six hundred eighty-eight".