1235220 has 96 divisors (see below), whose sum is σ = 4209408. Its totient is φ = 264192.

The previous prime is 1235191. The next prime is 1235239. The reversal of 1235220 is 225321.

1235220 = T₁₅ + T₁₆ + ... + T₁₉₄.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1235220.

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, 7054 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (43848).

2^1235220 is an apocalyptic number.

1235220 is a gapful number since it is divisible by the number (10) 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 1235220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2104704).

1235220 is an abundant number, since it is smaller than the sum of its proper divisors (2974188).

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

1235220 is a wasteful number, since it uses less digits than its factorization.

1235220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1235220 is about 1111.4045168164. The cubic root of 1235220 is about 107.2954827980.

The spelling of 1235220 in words is "one million, two hundred thirty-five thousand, two hundred twenty".