306621434 has 32 divisors (see below), whose sum is σ = 546963456. Its totient is φ = 126146160.

The previous prime is 306621391. The next prime is 306621439. The reversal of 306621434 is 434126603.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 306621397 and 306621406.

It is not an unprimeable number, because it can be changed into a prime (306621439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52337 + ... + 57899.

It is an arithmetic number, because the mean of its divisors is an integer number (17092608).

Almost surely, 2^306621434 is an apocalyptic number.

306621434 is a deficient number, since it is larger than the sum of its proper divisors (240342022).

306621434 is a wasteful number, since it uses less digits than its factorization.

306621434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 306621434 is about 17510.6091841489. The cubic root of 306621434 is about 674.3222710162.

The spelling of 306621434 in words is "three hundred six million, six hundred twenty-one thousand, four hundred thirty-four".