853136240 has 160 divisors (see below), whose sum is σ = 2298281472. Its totient is φ = 291456000.

The previous prime is 853136237. The next prime is 853136261. The reversal of 853136240 is 42631358.

It is a junction number, because it is equal to n+sod(n) for n = 853136197 and 853136206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1234295 + ... + 1234985.

Almost surely, 2^853136240 is an apocalyptic number.

853136240 is a gapful number since it is divisible by the number (80) 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 853136240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149140736).

853136240 is an abundant number, since it is smaller than the sum of its proper divisors (1445145232).

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

853136240 is a wasteful number, since it uses less digits than its factorization.

853136240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 853136240 is about 29208.4960242735. The cubic root of 853136240 is about 948.4318505789.

Adding to 853136240 its reverse (42631358), we get a palindrome (895767598).

The spelling of 853136240 in words is "eight hundred fifty-three million, one hundred thirty-six thousand, two hundred forty".