340021304 has 32 divisors (see below), whose sum is σ = 730329600. Its totient is φ = 145380960.

The previous prime is 340021303. The next prime is 340021333. The reversal of 340021304 is 403120043.

It is a super-2 number, since 2×340021304² = 231228974347720832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340021303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17669 + ... + 31499.

It is an arithmetic number, because the mean of its divisors is an integer number (22822800).

Almost surely, 2^340021304 is an apocalyptic number.

It is an amenable number.

340021304 is an abundant number, since it is smaller than the sum of its proper divisors (390308296).

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

340021304 is a wasteful number, since it uses less digits than its factorization.

340021304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14283 (or 14279 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 340021304 is about 18439.6665913460. Note that the first 3 decimals coincide. The cubic root of 340021304 is about 697.9677820287.

Adding to 340021304 its reverse (403120043), we get a palindrome (743141347).

The spelling of 340021304 in words is "three hundred forty million, twenty-one thousand, three hundred four".