853452720 has 320 divisors, whose sum is σ = 3149798400. Its totient is φ = 211875840.

The previous prime is 853452713. The next prime is 853452737. The reversal of 853452720 is 27254358.

853452720 is a `hidden beast` number, since 8 + 534 + 52 + 72 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2036671 + ... + 2037089.

It is an arithmetic number, because the mean of its divisors is an integer number (9843120).

Almost surely, 2^853452720 is an apocalyptic number.

853452720 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 853452720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574899200).

853452720 is an abundant number, since it is smaller than the sum of its proper divisors (2296345680).

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

853452720 is a wasteful number, since it uses less digits than its factorization.

853452720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 853452720 is about 29213.9131237156. The cubic root of 853452720 is about 948.5491130550.

The spelling of 853452720 in words is "eight hundred fifty-three million, four hundred fifty-two thousand, seven hundred twenty".