1235085220 has 24 divisors (see below), whose sum is σ = 2595700800. Its totient is φ = 493648992.

The previous prime is 1235085217. The next prime is 1235085221. The reversal of 1235085220 is 225805321.

It is not an unprimeable number, because it can be changed into a prime (1235085221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2971 + ... + 49789.

It is an arithmetic number, because the mean of its divisors is an integer number (108154200).

Almost surely, 2^1235085220 is an apocalyptic number.

1235085220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1235085220 is an abundant number, since it is smaller than the sum of its proper divisors (1360615580).

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

1235085220 is a wasteful number, since it uses less digits than its factorization.

1235085220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48147 (or 48145 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1235085220 is about 35143.7792503880. The cubic root of 1235085220 is about 1072.9158017039.

The spelling of 1235085220 in words is "one billion, two hundred thirty-five million, eighty-five thousand, two hundred twenty".