1056758440 has 32 divisors (see below), whose sum is σ = 2418012000. Its totient is φ = 415537984.

The previous prime is 1056758413. The next prime is 1056758453. The reversal of 1056758440 is 448576501.

It is a super-2 number, since 2×1056758440² = 2233476801022467200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1056758393 and 1056758402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221530 + ... + 226249.

It is an arithmetic number, because the mean of its divisors is an integer number (75562875).

Almost surely, 2^1056758440 is an apocalyptic number.

1056758440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056758440 is an abundant number, since it is smaller than the sum of its proper divisors (1361253560).

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

1056758440 is a wasteful number, since it uses less digits than its factorization.

1056758440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447849 (or 447845 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1056758440 is about 32507.8212127482. The cubic root of 1056758440 is about 1018.5724101597.

The spelling of 1056758440 in words is "one billion, fifty-six million, seven hundred fifty-eight thousand, four hundred forty".