238220940 has 24 divisors (see below), whose sum is σ = 667018800. Its totient is φ = 63525568.

The previous prime is 238220893. The next prime is 238220951. The reversal of 238220940 is 49022832.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 238220898 and 238220907.

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, 1985115 + ... + 1985234.

It is an arithmetic number, because the mean of its divisors is an integer number (27792450).

Almost surely, 2^238220940 is an apocalyptic number.

238220940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238220940 is an abundant number, since it is smaller than the sum of its proper divisors (428797860).

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

238220940 is a wasteful number, since it uses less digits than its factorization.

238220940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970361 (or 3970359 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 238220940 is about 15434.4076659909. The cubic root of 238220940 is about 619.9071487731.

The spelling of 238220940 in words is "two hundred thirty-eight million, two hundred twenty thousand, nine hundred forty".