1027823640 has 64 divisors (see below), whose sum is σ = 3115294560. Its totient is φ = 271257600.

The previous prime is 1027823603. The next prime is 1027823651. The reversal of 1027823640 is 463287201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32511 + ... + 55790.

Almost surely, 2^1027823640 is an apocalyptic number.

1027823640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1027823640 is an abundant number, since it is smaller than the sum of its proper divisors (2087470920).

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

1027823640 is a wasteful number, since it uses less digits than its factorization.

1027823640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88412 (or 88408 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1027823640 is about 32059.6887071600. The cubic root of 1027823640 is about 1009.1898348980.

The spelling of 1027823640 in words is "one billion, twenty-seven million, eight hundred twenty-three thousand, six hundred forty".