308348842 has 4 divisors (see below), whose sum is σ = 462523266. Its totient is φ = 154174420.

The previous prime is 308348837. The next prime is 308348849. The reversal of 308348842 is 248843803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 297597001 + 10751841 = 17251^2 + 3279^2 .

It is a junction number, because it is equal to n+sod(n) for n = 308348795 and 308348804.

It is not an unprimeable number, because it can be changed into a prime (308348849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77087209 + ... + 77087212.

Almost surely, 2^308348842 is an apocalyptic number.

308348842 is a deficient number, since it is larger than the sum of its proper divisors (154174424).

308348842 is a wasteful number, since it uses less digits than its factorization.

308348842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154174423.

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 308348842 is about 17559.8645211175. The cubic root of 308348842 is about 675.5862064429.

The spelling of 308348842 in words is "three hundred eight million, three hundred forty-eight thousand, eight hundred forty-two".