345634320 has 80 divisors (see below), whose sum is σ = 1127874240. Its totient is φ = 87316992.

The previous prime is 345634309. The next prime is 345634321. The reversal of 345634320 is 23436543.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (345634321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33339 + ... + 42458.

It is an arithmetic number, because the mean of its divisors is an integer number (14098428).

Almost surely, 2^345634320 is an apocalyptic number.

345634320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345634320 is an abundant number, since it is smaller than the sum of its proper divisors (782239920).

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

345634320 is a wasteful number, since it uses less digits than its factorization.

345634320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75832 (or 75826 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

The square root of 345634320 is about 18591.2430999113. The cubic root of 345634320 is about 701.7874860987.

It can be divided in two parts, 34563 and 4320, that added together give a palindrome (38883).

The spelling of 345634320 in words is "three hundred forty-five million, six hundred thirty-four thousand, three hundred twenty".