1027851840 has 84 divisors (see below), whose sum is σ = 3535391964. Its totient is φ = 274093056.

The previous prime is 1027851827. The next prime is 1027851859. The reversal of 1027851840 is 481587201.

It can be written as a sum of positive squares in 2 ways, for example, as 791184384 + 236667456 = 28128^2 + 15384^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1027851795 and 1027851804.

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 11 ways as a sum of consecutive naturals, for example, 175567 + ... + 181326.

Almost surely, 2^1027851840 is an apocalyptic number.

1027851840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1027851840 is an abundant number, since it is smaller than the sum of its proper divisors (2507540124).

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

1027851840 is a wasteful number, since it uses less digits than its factorization.

1027851840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356916 (or 356903 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 1027851840 is about 32060.1285087880. The cubic root of 1027851840 is about 1009.1990643974.

The spelling of 1027851840 in words is "one billion, twenty-seven million, eight hundred fifty-one thousand, eight hundred forty".