238856040 has 80 divisors (see below), whose sum is σ = 802832580. Its totient is φ = 63694080.

The previous prime is 238856039. The next prime is 238856047. The reversal of 238856040 is 40658832.

It can be written as a sum of positive squares in 2 ways, for example, as 229159044 + 9696996 = 15138^2 + 3114^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 238855986 and 238856004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238856047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33621 + ... + 40100.

Almost surely, 2^238856040 is an apocalyptic number.

238856040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238856040 is an abundant number, since it is smaller than the sum of its proper divisors (563976540).

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

238856040 is a wasteful number, since it uses less digits than its factorization.

238856040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73744 (or 73731 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 238856040 is about 15454.9681332573. The cubic root of 238856040 is about 620.4575533332.

The spelling of 238856040 in words is "two hundred thirty-eight million, eight hundred fifty-six thousand, forty".