238097778 has 16 divisors (see below), whose sum is σ = 501258720. Its totient is φ = 75188736.

The previous prime is 238097753. The next prime is 238097809. The reversal of 238097778 is 877790832.

238097778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 238097778.

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 in 7 ways as a sum of consecutive naturals, for example, 1044175 + ... + 1044402.

It is an arithmetic number, because the mean of its divisors is an integer number (31328670).

Almost surely, 2^238097778 is an apocalyptic number.

238097778 is an abundant number, since it is smaller than the sum of its proper divisors (263160942).

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

238097778 is a wasteful number, since it uses less digits than its factorization.

238097778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088601.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The square root of 238097778 is about 15430.4172983105. The cubic root of 238097778 is about 619.8002981526.

The spelling of 238097778 in words is "two hundred thirty-eight million, ninety-seven thousand, seven hundred seventy-eight".