1057830 has 32 divisors (see below), whose sum is σ = 2610144. Its totient is φ = 274176.

The previous prime is 1057807. The next prime is 1057831. The reversal of 1057830 is 387501.

It is a super-2 number, since 2×1057830² = 2238008617800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (81567).

2^1057830 is an apocalyptic number.

1057830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1057830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305072).

1057830 is an abundant number, since it is smaller than the sum of its proper divisors (1552314).

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

1057830 is a wasteful number, since it uses less digits than its factorization.

1057830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1057830 is about 1028.5086290353. The cubic root of 1057830 is about 101.8916573563.

The spelling of 1057830 in words is "one million, fifty-seven thousand, eight hundred thirty".