238990180 has 48 divisors (see below), whose sum is σ = 589627584. Its totient is φ = 80219520.

The previous prime is 238990177. The next prime is 238990181. The reversal of 238990180 is 81099832.

It is a super-2 number, since 2×238990180² = 114232612272864800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (238990181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38922 + ... + 44641.

It is an arithmetic number, because the mean of its divisors is an integer number (12283908).

Almost surely, 2^238990180 is an apocalyptic number.

238990180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238990180 is an abundant number, since it is smaller than the sum of its proper divisors (350637404).

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

238990180 is a wasteful number, since it uses less digits than its factorization.

238990180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83596 (or 83594 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 238990180 is about 15459.3072289802. The cubic root of 238990180 is about 620.5736799073.

The spelling of 238990180 in words is "two hundred thirty-eight million, nine hundred ninety thousand, one hundred eighty".