238628011 has 4 divisors (see below), whose sum is σ = 251187400. Its totient is φ = 226068624.

The previous prime is 238628009. The next prime is 238628029. The reversal of 238628011 is 110826832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238628011 - 2¹ = 238628009 is a prime.

It is a super-2 number, since 2×238628011² = 113886655267632242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238628041) 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, 6279666 + ... + 6279703.

It is an arithmetic number, because the mean of its divisors is an integer number (62796850).

Almost surely, 2^238628011 is an apocalyptic number.

238628011 is a deficient number, since it is larger than the sum of its proper divisors (12559389).

238628011 is a wasteful number, since it uses less digits than its factorization.

238628011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12559388.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 238628011 is about 15447.5891646561. The cubic root of 238628011 is about 620.2600461341.

The spelling of 238628011 in words is "two hundred thirty-eight million, six hundred twenty-eight thousand, eleven".