345226520 has 16 divisors (see below), whose sum is σ = 776759760. Its totient is φ = 138090592.

The previous prime is 345226501. The next prime is 345226529. The reversal of 345226520 is 25622543.

It is a super-2 number, since 2×345226520² = 238362700222620800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345226529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4315292 + ... + 4315371.

It is an arithmetic number, because the mean of its divisors is an integer number (48547485).

Almost surely, 2^345226520 is an apocalyptic number.

It is an amenable number.

345226520 is an abundant number, since it is smaller than the sum of its proper divisors (431533240).

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

345226520 is a wasteful number, since it uses less digits than its factorization.

345226520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8630674 (or 8630670 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 345226520 is about 18580.2723338491. The cubic root of 345226520 is about 701.5113738915.

The spelling of 345226520 in words is "three hundred forty-five million, two hundred twenty-six thousand, five hundred twenty".