1052840 has 16 divisors (see below), whose sum is σ = 2368980. Its totient is φ = 421120.

The previous prime is 1052819. The next prime is 1052851. The reversal of 1052840 is 482501.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 40804 = 1006^2 + 202^2 .

It is a super-2 number, since 2×1052840² = 2216944131200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 3 ways as a sum of consecutive naturals, for example, 13121 + ... + 13200.

2^1052840 is an apocalyptic number.

1052840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052840 is an abundant number, since it is smaller than the sum of its proper divisors (1316140).

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

1052840 is a wasteful number, since it uses less digits than its factorization.

1052840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26332 (or 26328 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1052840 is about 1026.0799189147. The cubic root of 1052840 is about 101.7311901915.

The spelling of 1052840 in words is "one million, fifty-two thousand, eight hundred forty".