345420500 has 24 divisors (see below), whose sum is σ = 754399464. Its totient is φ = 138168000.

The previous prime is 345420497. The next prime is 345420529. The reversal of 345420500 is 5024543.

It can be written as a sum of positive squares in 4 ways, for example, as 3984016 + 341436484 = 1996^2 + 18478^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344921 + ... + 345920.

It is an arithmetic number, because the mean of its divisors is an integer number (31433311).

Almost surely, 2^345420500 is an apocalyptic number.

It is an amenable number.

345420500 is an abundant number, since it is smaller than the sum of its proper divisors (408978964).

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

345420500 is a wasteful number, since it uses less digits than its factorization.

345420500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690860 (or 690848 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 345420500 is about 18585.4916534376. The cubic root of 345420500 is about 701.6427404862.

The spelling of 345420500 in words is "three hundred forty-five million, four hundred twenty thousand, five hundred".