755285220 has 144 divisors (see below), whose sum is σ = 2348341632. Its totient is φ = 196439040.

The previous prime is 755285213. The next prime is 755285233. The reversal of 755285220 is 22582557.

755285220 is a `hidden beast` number, since 7 + 552 + 85 + 2 + 20 = 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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1443879 + ... + 1444401.

It is an arithmetic number, because the mean of its divisors is an integer number (16307928).

Almost surely, 2^755285220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 755285220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1174170816).

755285220 is an abundant number, since it is smaller than the sum of its proper divisors (1593056412).

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

755285220 is a wasteful number, since it uses less digits than its factorization.

755285220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 755285220 is about 27482.4529472898. The cubic root of 755285220 is about 910.6894987750.

The spelling of 755285220 in words is "seven hundred fifty-five million, two hundred eighty-five thousand, two hundred twenty".