238628293 has 2 divisors, whose sum is σ = 238628294. Its totient is φ = 238628292.

The previous prime is 238628261. The next prime is 238628309. The reversal of 238628293 is 392826832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139287204 + 99341089 = 11802^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 238628293 - 2⁵ = 238628261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238628393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119314146 + 119314147.

It is an arithmetic number, because the mean of its divisors is an integer number (119314147).

Almost surely, 2^238628293 is an apocalyptic number.

It is an amenable number.

238628293 is a deficient number, since it is larger than the sum of its proper divisors (1).

238628293 is an equidigital number, since it uses as much as digits as its factorization.

238628293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 238628293 is about 15447.5982922913. The cubic root of 238628293 is about 620.2602904659.

The spelling of 238628293 in words is "two hundred thirty-eight million, six hundred twenty-eight thousand, two hundred ninety-three".