2355220 has 24 divisors (see below), whose sum is σ = 5652864. Its totient is φ = 807456.

The previous prime is 2355211. The next prime is 2355229. The reversal of 2355220 is 225532.

It is an interprime number because it is at equal distance from previous prime (2355211) and next prime (2355229).

It is a super-2 number, since 2×2355220² = 11094122496800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2355229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8272 + ... + 8551.

It is an arithmetic number, because the mean of its divisors is an integer number (235536).

2^2355220 is an apocalyptic number.

2355220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2355220 is an abundant number, since it is smaller than the sum of its proper divisors (3297644).

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

2355220 is a wasteful number, since it uses less digits than its factorization.

2355220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16839 (or 16837 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 2355220 is about 1534.6726035217. The cubic root of 2355220 is about 133.0486565148.

The spelling of 2355220 in words is "two million, three hundred fifty-five thousand, two hundred twenty".