1057860 has 60 divisors (see below), whose sum is σ = 3323628. Its totient is φ = 281664.

The previous prime is 1057853. The next prime is 1057879. The reversal of 1057860 is 687501.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 746496 = 558^2 + 864^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×1057860² = 2238135559200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1294 + ... + 1946.

2^1057860 is an apocalyptic number.

1057860 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 1057860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661814).

1057860 is an abundant number, since it is smaller than the sum of its proper divisors (2265768).

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

1057860 is a wasteful number, since it uses less digits than its factorization.

1057860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1057860 is about 1028.5232131556. The cubic root of 1057860 is about 101.8926205611.

The spelling of 1057860 in words is "one million, fifty-seven thousand, eight hundred sixty".