308872842 has 16 divisors (see below), whose sum is σ = 644604480. Its totient is φ = 98481152.

The previous prime is 308872841. The next prime is 308872843. The reversal of 308872842 is 248278803.

It is an interprime number because it is at equal distance from previous prime (308872841) and next prime (308872843).

It is a junction number, because it is equal to n+sod(n) for n = 308872794 and 308872803.

It is not an unprimeable number, because it can be changed into a prime (308872841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118967 + ... + 1119242.

It is an arithmetic number, because the mean of its divisors is an integer number (40287780).

Almost surely, 2^308872842 is an apocalyptic number.

308872842 is an abundant number, since it is smaller than the sum of its proper divisors (335731638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308872842 is a wasteful number, since it uses less digits than its factorization.

308872842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238237.

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 308872842 is about 17574.7785761301. The cubic root of 308872842 is about 675.9686810765.

The spelling of 308872842 in words is "three hundred eight million, eight hundred seventy-two thousand, eight hundred forty-two".