345023520 has 96 divisors (see below), whose sum is σ = 1116255168. Its totient is φ = 89515008.

The previous prime is 345023513. The next prime is 345023531. The reversal of 345023520 is 25320543.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8047 + ... + 27473.

It is an arithmetic number, because the mean of its divisors is an integer number (11627658).

Almost surely, 2^345023520 is an apocalyptic number.

345023520 is a gapful number since it is divisible by the number (30) 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 345023520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558127584).

345023520 is an abundant number, since it is smaller than the sum of its proper divisors (771231648).

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

345023520 is a wasteful number, since it uses less digits than its factorization.

345023520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19482 (or 19474 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 345023520 is about 18574.8087473330. The cubic root of 345023520 is about 701.3738460921.

It can be divided in two parts, 345023 and 520, that added together give a palindrome (345543).

The spelling of 345023520 in words is "three hundred forty-five million, twenty-three thousand, five hundred twenty".