305453642 has 12 divisors (see below), whose sum is σ = 496136790. Its totient is φ = 140978448.

The previous prime is 305453627. The next prime is 305453651. The reversal of 305453642 is 246354503.

It can be written as a sum of positive squares in 3 ways, for example, as 208253761 + 97199881 = 14431^2 + 9859^2 .

It is a super-2 number, since 2×305453642² = 186603854822128328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305453599 and 305453608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 451517 + ... + 452192.

Almost surely, 2^305453642 is an apocalyptic number.

305453642 is a deficient number, since it is larger than the sum of its proper divisors (190683148).

305453642 is a wasteful number, since it uses less digits than its factorization.

305453642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903737 (or 903724 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 305453642 is about 17477.2321035111. The cubic root of 305453642 is about 673.4651119939.

The spelling of 305453642 in words is "three hundred five million, four hundred fifty-three thousand, six hundred forty-two".