853040 has 20 divisors (see below), whose sum is σ = 1983504. Its totient is φ = 341184.

The previous prime is 853033. The next prime is 853049. The reversal of 853040 is 40358.

It is a tau number, because it is divible by the number of its divisors (20).

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 853040.

It is not an unprimeable number, because it can be changed into a prime (853049) by changing a digit.

853040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5252 + ... + 5411.

2⁸⁵³⁰⁴⁰ is an apocalyptic number.

853040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

853040 is an abundant number, since it is smaller than the sum of its proper divisors (1130464).

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

853040 is a wasteful number, since it uses less digits than its factorization.

853040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676 (or 10670 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 853040 is about 923.6016457326. The cubic root of 853040 is about 94.8396185891.

Adding to 853040 its reverse (40358), we get a palindrome (893398).

It can be divided in two parts, 85 and 3040, that added together give a 5-th power (3125 = 5⁵).

The spelling of 853040 in words is "eight hundred fifty-three thousand, forty".