2345220 has 96 divisors (see below), whose sum is σ = 7539840. Its totient is φ = 604800.

The previous prime is 2345219. The next prime is 2345249. The reversal of 2345220 is 225432.

2345220 = T₁₉₉ + T₂₀₀ + ... + T₂₇₉.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2345193 and 2345202.

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, 23170 + ... + 23270.

It is an arithmetic number, because the mean of its divisors is an integer number (78540).

2^2345220 is an apocalyptic number.

2345220 is a gapful number since it is divisible by the number (20) 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 2345220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3769920).

2345220 is an abundant number, since it is smaller than the sum of its proper divisors (5194620).

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

2345220 is a wasteful number, since it uses less digits than its factorization.

2345220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2345220 is about 1531.4111139730. The cubic root of 2345220 is about 132.8600861545.

The spelling of 2345220 in words is "two million, three hundred forty-five thousand, two hundred twenty".