306885242 has 8 divisors (see below), whose sum is σ = 462119796. Its totient is φ = 152845312.

The previous prime is 306885233. The next prime is 306885301. The reversal of 306885242 is 242588603.

It can be written as a sum of positive squares in 2 ways, for example, as 219069601 + 87815641 = 14801^2 + 9371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×306885242⁴ (a number of 35 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 306885196 and 306885205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298013 + ... + 299040.

Almost surely, 2^306885242 is an apocalyptic number.

306885242 is a deficient number, since it is larger than the sum of its proper divisors (155234554).

306885242 is a wasteful number, since it uses less digits than its factorization.

306885242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597312.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 306885242 is about 17518.1403693429. The cubic root of 306885242 is about 674.5156045504.

The spelling of 306885242 in words is "three hundred six million, eight hundred eighty-five thousand, two hundred forty-two".