345421304 has 8 divisors (see below), whose sum is σ = 647664960. Its totient is φ = 172710648.

The previous prime is 345421303. The next prime is 345421333. The reversal of 345421304 is 403124543.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345421303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21588824 + ... + 21588839.

It is an arithmetic number, because the mean of its divisors is an integer number (80958120).

Almost surely, 2^345421304 is an apocalyptic number.

It is an amenable number.

345421304 is a deficient number, since it is larger than the sum of its proper divisors (302243656).

345421304 is a wasteful number, since it uses less digits than its factorization.

345421304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43177669 (or 43177665 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 345421304 is about 18585.5132831999. The cubic root of 345421304 is about 701.6432848664.

Adding to 345421304 its reverse (403124543), we get a palindrome (748545847).

The spelling of 345421304 in words is "three hundred forty-five million, four hundred twenty-one thousand, three hundred four".