238183740 has 72 divisors (see below), whose sum is σ = 749264880. Its totient is φ = 63514368.

The previous prime is 238183739. The next prime is 238183747. The reversal of 238183740 is 47381832.

238183740 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 = 238183695 and 238183704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238183747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19645 + ... + 29364.

Almost surely, 2^238183740 is an apocalyptic number.

238183740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238183740 is an abundant number, since it is smaller than the sum of its proper divisors (511081140).

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

238183740 is a wasteful number, since it uses less digits than its factorization.

238183740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49033 (or 49019 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 238183740 is about 15433.2025192440. The cubic root of 238183740 is about 619.8748793647.

The spelling of 238183740 in words is "two hundred thirty-eight million, one hundred eighty-three thousand, seven hundred forty".