238144040 has 32 divisors (see below), whose sum is σ = 536296680. Its totient is φ = 95173632.

The previous prime is 238144013. The next prime is 238144069. The reversal of 238144040 is 40441832.

It can be written as a sum of positive squares in 4 ways, for example, as 150945796 + 87198244 = 12286^2 + 9338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64484 + ... + 68076.

Almost surely, 2^238144040 is an apocalyptic number.

238144040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238144040 is an abundant number, since it is smaller than the sum of its proper divisors (298152640).

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

238144040 is a wasteful number, since it uses less digits than its factorization.

238144040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261 (or 5257 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 238144040 is about 15431.9162776371. The cubic root of 238144040 is about 619.8404376068.

Adding to 238144040 its reverse (40441832), we get a palindrome (278585872).

It can be divided in two parts, 2381440 and 40, that multiplied together give a square (95257600 = 9760²).

The spelling of 238144040 in words is "two hundred thirty-eight million, one hundred forty-four thousand, forty".