345307738 has 4 divisors (see below), whose sum is σ = 517961610. Its totient is φ = 172653868.

The previous prime is 345307709. The next prime is 345307741. The reversal of 345307738 is 837703543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 326271969 + 19035769 = 18063^2 + 4363^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 345307738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86326933 + ... + 86326936.

Almost surely, 2^345307738 is an apocalyptic number.

345307738 is a deficient number, since it is larger than the sum of its proper divisors (172653872).

345307738 is a wasteful number, since it uses less digits than its factorization.

345307738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172653871.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 345307738 is about 18582.4578029926. The cubic root of 345307738 is about 701.5663821059.

The spelling of 345307738 in words is "three hundred forty-five million, three hundred seven thousand, seven hundred thirty-eight".