1005640376 has 16 divisors (see below), whose sum is σ = 2030620200. Its totient is φ = 464141664.

The previous prime is 1005640373. The next prime is 1005640381. The reversal of 1005640376 is 6730465001.

It is a super-2 number, since 2×1005640376² = 2022625131682842752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005640373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4834706 + ... + 4834913.

Almost surely, 2^1005640376 is an apocalyptic number.

It is an amenable number.

1005640376 is an abundant number, since it is smaller than the sum of its proper divisors (1024979824).

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

1005640376 is a wasteful number, since it uses less digits than its factorization.

1005640376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669638 (or 9669634 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1005640376 is about 31711.8333749407. The cubic root of 1005640376 is about 1001.8766014973.

The spelling of 1005640376 in words is "one billion, five million, six hundred forty thousand, three hundred seventy-six".