238990146 has 16 divisors (see below), whose sum is σ = 478461600. Its totient is φ = 79583168.

The previous prime is 238990133. The next prime is 238990177. The reversal of 238990146 is 641099832.

It is a junction number, because it is equal to n+sod(n) for n = 238990098 and 238990107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13431 + ... + 25658.

It is an arithmetic number, because the mean of its divisors is an integer number (29903850).

Almost surely, 2^238990146 is an apocalyptic number.

238990146 is an abundant number, since it is smaller than the sum of its proper divisors (239471454).

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

238990146 is a wasteful number, since it uses less digits than its factorization.

238990146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40113.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 238990146 is about 15459.3061293190. The cubic root of 238990146 is about 620.5736504786.

The spelling of 238990146 in words is "two hundred thirty-eight million, nine hundred ninety thousand, one hundred forty-six".