1001057840 has 40 divisors (see below), whose sum is σ = 2332939968. Its totient is φ = 399480320.

The previous prime is 1001057839. The next prime is 1001057857. The reversal of 1001057840 is 487501001.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19964 + ... + 48996.

Almost surely, 2^1001057840 is an apocalyptic number.

1001057840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001057840 is an abundant number, since it is smaller than the sum of its proper divisors (1331882128).

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

1001057840 is a wasteful number, since it uses less digits than its factorization.

1001057840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29477 (or 29471 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 1001057840 is about 31639.4980996855. The cubic root of 1001057840 is about 1000.3524890702.

Adding to 1001057840 its reverse (487501001), we get a palindrome (1488558841).

The spelling of 1001057840 in words is "one billion, one million, fifty-seven thousand, eight hundred forty".