345520422 has 48 divisors (see below), whose sum is σ = 808215408. Its totient is φ = 106050240.

The previous prime is 345520411. The next prime is 345520429. The reversal of 345520422 is 224025543.

It is a happy number.

345520422 is a `hidden beast` number, since 3 + 455 + 204 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345520429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106273 + ... + 109475.

It is an arithmetic number, because the mean of its divisors is an integer number (16837821).

Almost surely, 2^345520422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345520422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404107704).

345520422 is an abundant number, since it is smaller than the sum of its proper divisors (462694986).

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

345520422 is a wasteful number, since it uses less digits than its factorization.

345520422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 345520422 is about 18588.1796311527. The cubic root of 345520422 is about 701.7103901930.

Adding to 345520422 its reverse (224025543), we get a palindrome (569545965).

The spelling of 345520422 in words is "three hundred forty-five million, five hundred twenty thousand, four hundred twenty-two".