308085838 has 4 divisors (see below), whose sum is σ = 462128760. Its totient is φ = 154042918.

The previous prime is 308085829. The next prime is 308085847. The reversal of 308085838 is 838580803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838580803 = 157 ⋅5341279.

It is an interprime number because it is at equal distance from previous prime (308085829) and next prime (308085847).

It is a junction number, because it is equal to n+sod(n) for n = 308085794 and 308085803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77021458 + ... + 77021461.

It is an arithmetic number, because the mean of its divisors is an integer number (115532190).

Almost surely, 2^308085838 is an apocalyptic number.

308085838 is a deficient number, since it is larger than the sum of its proper divisors (154042922).

308085838 is a wasteful number, since it uses less digits than its factorization.

308085838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154042921.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 308085838 is about 17552.3741414089. The cubic root of 308085838 is about 675.3940729544.

The spelling of 308085838 in words is "three hundred eight million, eighty-five thousand, eight hundred thirty-eight".