305402045 has 16 divisors (see below), whose sum is σ = 408285360. Its totient is φ = 217749504.

The previous prime is 305402021. The next prime is 305402057. The reversal of 305402045 is 540204503.

It can be written as a sum of positive squares in 8 ways, for example, as 47927929 + 257474116 = 6923^2 + 16046^2 .

It is a cyclic number.

It is not a de Polignac number, because 305402045 - 2¹⁰ = 305401021 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 305402045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79124 + ... + 82893.

It is an arithmetic number, because the mean of its divisors is an integer number (25517835).

Almost surely, 2^305402045 is an apocalyptic number.

It is an amenable number.

305402045 is a deficient number, since it is larger than the sum of its proper divisors (102883315).

305402045 is a wasteful number, since it uses less digits than its factorization.

305402045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162064.

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

The square root of 305402045 is about 17475.7559207034. The cubic root of 305402045 is about 673.4271894514.

Adding to 305402045 its reverse (540204503), we get a palindrome (845606548).

The spelling of 305402045 in words is "three hundred five million, four hundred two thousand, forty-five".