1047235840 has 216 divisors, whose sum is σ = 2977944480. Its totient is φ = 351719424.

The previous prime is 1047235837. The next prime is 1047235841. The reversal of 1047235840 is 485327401.

It is a junction number, because it is equal to n+sod(n) for n = 1047235796 and 1047235805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047235841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3700339 + ... + 3700621.

It is an arithmetic number, because the mean of its divisors is an integer number (13786780).

Almost surely, 2^1047235840 is an apocalyptic number.

1047235840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047235840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488972240).

1047235840 is an abundant number, since it is smaller than the sum of its proper divisors (1930708640).

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

1047235840 is an equidigital number, since it uses as much as digits as its factorization.

1047235840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1047235840 is about 32361.0234696000. The cubic root of 1047235840 is about 1015.5036739204.

The spelling of 1047235840 in words is "one billion, forty-seven million, two hundred thirty-five thousand, eight hundred forty".