1040585820 has 24 divisors (see below), whose sum is σ = 2913640464. Its totient is φ = 277489536.

The previous prime is 1040585813. The next prime is 1040585837. The reversal of 1040585820 is 285850401.

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 7 ways as a sum of consecutive naturals, for example, 8671489 + ... + 8671608.

It is an arithmetic number, because the mean of its divisors is an integer number (121401686).

Almost surely, 2^1040585820 is an apocalyptic number.

1040585820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040585820 is an abundant number, since it is smaller than the sum of its proper divisors (1873054644).

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

1040585820 is a wasteful number, since it uses less digits than its factorization.

1040585820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17343109 (or 17343107 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 1040585820 is about 32258.1124680289. The cubic root of 1040585820 is about 1013.3496017798.

The spelling of 1040585820 in words is "one billion, forty million, five hundred eighty-five thousand, eight hundred twenty".