308508842 has 16 divisors (see below), whose sum is σ = 476032032. Its totient is φ = 149892720.

The previous prime is 308508841. The next prime is 308508853. The reversal of 308508842 is 248805803.

It is a junction number, because it is equal to n+sod(n) for n = 308508796 and 308508805.

It is not an unprimeable number, because it can be changed into a prime (308508841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5108 + ... + 25359.

It is an arithmetic number, because the mean of its divisors is an integer number (29752002).

Almost surely, 2^308508842 is an apocalyptic number.

308508842 is a deficient number, since it is larger than the sum of its proper divisors (167523190).

308508842 is a wasteful number, since it uses less digits than its factorization.

308508842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30613.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 308508842 is about 17564.4197740774. The cubic root of 308508842 is about 675.7030385146.

The spelling of 308508842 in words is "three hundred eight million, five hundred eight thousand, eight hundred forty-two".