238011780 has 24 divisors (see below), whose sum is σ = 666433152. Its totient is φ = 63469792.

The previous prime is 238011749. The next prime is 238011791. The reversal of 238011780 is 87110832.

It is a happy number.

238011780 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 (30).

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, 1983372 + ... + 1983491.

It is an arithmetic number, because the mean of its divisors is an integer number (27768048).

Almost surely, 2^238011780 is an apocalyptic number.

238011780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238011780 is an abundant number, since it is smaller than the sum of its proper divisors (428421372).

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

238011780 is a wasteful number, since it uses less digits than its factorization.

238011780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966875 (or 3966873 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 238011780 is about 15427.6304078105. The cubic root of 238011780 is about 619.7256677423.

The spelling of 238011780 in words is "two hundred thirty-eight million, eleven thousand, seven hundred eighty".