1235032220 has 48 divisors (see below), whose sum is σ = 2640895488. Its totient is φ = 485056320.

The previous prime is 1235032189. The next prime is 1235032223. The reversal of 1235032220 is 222305321.

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

It is a junction number, because it is equal to n+sod(n) for n = 1235032192 and 1235032201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235032223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371807 + ... + 375113.

It is an arithmetic number, because the mean of its divisors is an integer number (55018656).

Almost surely, 2^1235032220 is an apocalyptic number.

1235032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1235032220 is an abundant number, since it is smaller than the sum of its proper divisors (1405863268).

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

1235032220 is a wasteful number, since it uses less digits than its factorization.

1235032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650 (or 3648 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1235032220 is about 35143.0251970430. The cubic root of 1235032220 is about 1072.9004544901.

Adding to 1235032220 its reverse (222305321), we get a palindrome (1457337541).

The spelling of 1235032220 in words is "one billion, two hundred thirty-five million, thirty-two thousand, two hundred twenty".