308942038 has 4 divisors (see below), whose sum is σ = 463413060. Its totient is φ = 154471018.

The previous prime is 308942027. The next prime is 308942041. The reversal of 308942038 is 830249803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 830249803 = 25169 ⋅32987.

It is a junction number, because it is equal to n+sod(n) for n = 308941988 and 308942006.

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 as a sum of consecutive naturals, namely, 77235508 + ... + 77235511.

It is an arithmetic number, because the mean of its divisors is an integer number (115853265).

Almost surely, 2^308942038 is an apocalyptic number.

308942038 is a deficient number, since it is larger than the sum of its proper divisors (154471022).

308942038 is a wasteful number, since it uses less digits than its factorization.

308942038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154471021.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 308942038 is about 17576.7470824382. The cubic root of 308942038 is about 676.0191558242.

The spelling of 308942038 in words is "three hundred eight million, nine hundred forty-two thousand, thirty-eight".