305142622 has 32 divisors (see below), whose sum is σ = 511660800. Its totient is φ = 135635328.

The previous prime is 305142619. The next prime is 305142637. The reversal of 305142622 is 226241503.

It is a super-2 number, since 2×305142622² = 186224039522069768, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 363279 + ... + 364117.

It is an arithmetic number, because the mean of its divisors is an integer number (15989400).

Almost surely, 2^305142622 is an apocalyptic number.

305142622 is the 14263-rd pentagonal number.

305142622 is a deficient number, since it is larger than the sum of its proper divisors (206518178).

305142622 is a wasteful number, since it uses less digits than its factorization.

305142622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 305142622 is about 17468.3319753204. The cubic root of 305142622 is about 673.2364550901.

The spelling of 305142622 in words is "three hundred five million, one hundred forty-two thousand, six hundred twenty-two".