238646790 has 32 divisors (see below), whose sum is σ = 636392160. Its totient is φ = 63639072.

The previous prime is 238646789. The next prime is 238646791. The reversal of 238646790 is 97646832.

238646790 is a `hidden beast` number, since 23 + 86 + 467 + 90 = 666.

238646790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (238646789) and next prime (238646791).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238646791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441669 + ... + 442208.

It is an arithmetic number, because the mean of its divisors is an integer number (19887255).

Almost surely, 2^238646790 is an apocalyptic number.

238646790 is an abundant number, since it is smaller than the sum of its proper divisors (397745370).

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

238646790 is a wasteful number, since it uses less digits than its factorization.

238646790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883893 (or 883887 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 238646790 is about 15448.1969821724. The cubic root of 238646790 is about 620.2763163082.

The spelling of 238646790 in words is "two hundred thirty-eight million, six hundred forty-six thousand, seven hundred ninety".