238872737 has 4 divisors (see below), whose sum is σ = 241064340. Its totient is φ = 236681136.

The previous prime is 238872721. The next prime is 238872743. The reversal of 238872737 is 737278832.

It is a happy number.

238872737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 189998656 + 48874081 = 13784^2 + 6991^2 .

It is a cyclic number.

It is not a de Polignac number, because 238872737 - 2⁴ = 238872721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238872691 and 238872700.

It is not an unprimeable number, because it can be changed into a prime (238872757) 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, 1095638 + ... + 1095855.

It is an arithmetic number, because the mean of its divisors is an integer number (60266085).

Almost surely, 2^238872737 is an apocalyptic number.

It is an amenable number.

238872737 is a deficient number, since it is larger than the sum of its proper divisors (2191603).

238872737 is a wasteful number, since it uses less digits than its factorization.

238872737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191602.

The product of its digits is 790272, while the sum is 47.

The square root of 238872737 is about 15455.5083061024. The cubic root of 238872737 is about 620.4720104910.

The spelling of 238872737 in words is "two hundred thirty-eight million, eight hundred seventy-two thousand, seven hundred thirty-seven".