308144238 has 8 divisors (see below), whose sum is σ = 616288488. Its totient is φ = 102714744.

The previous prime is 308144237. The next prime is 308144257. The reversal of 308144238 is 832441803.

It is a sphenic number, since it is the product of 3 distinct primes.

308144238 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 308144199 and 308144208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308144231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25678681 + ... + 25678692.

It is an arithmetic number, because the mean of its divisors is an integer number (77036061).

Almost surely, 2^308144238 is an apocalyptic number.

308144238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

308144238 is a wasteful number, since it uses less digits than its factorization.

308144238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51357378.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 308144238 is about 17554.0376551949. The cubic root of 308144238 is about 675.4367456092.

The spelling of 308144238 in words is "three hundred eight million, one hundred forty-four thousand, two hundred thirty-eight".