2853640 has 16 divisors (see below), whose sum is σ = 6420780. Its totient is φ = 1141440.

The previous prime is 2853611. The next prime is 2853647. The reversal of 2853640 is 463582.

It can be written as a sum of positive squares in 2 ways, for example, as 2643876 + 209764 = 1626^2 + 458^2 .

It is a super-2 number, since 2×2853640² = 16286522499200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2853599 and 2853608.

It is not an unprimeable number, because it can be changed into a prime (2853647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35631 + ... + 35710.

2^2853640 is an apocalyptic number.

2853640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2853640 is an abundant number, since it is smaller than the sum of its proper divisors (3567140).

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

2853640 is a wasteful number, since it uses less digits than its factorization.

2853640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71352 (or 71348 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2853640 is about 1689.2720325631. The cubic root of 2853640 is about 141.8403283606.

The spelling of 2853640 in words is "two million, eight hundred fifty-three thousand, six hundred forty".