238220784 has 80 divisors (see below), whose sum is σ = 719795200. Its totient is φ = 75225024.

The previous prime is 238220777. The next prime is 238220789. The reversal of 238220784 is 487022832.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238220789) 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, 6304 + ... + 22719.

It is an arithmetic number, because the mean of its divisors is an integer number (8997440).

Almost surely, 2^238220784 is an apocalyptic number.

238220784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

238220784 is an abundant number, since it is smaller than the sum of its proper divisors (481574416).

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

238220784 is a wasteful number, since it uses less digits than its factorization.

238220784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29059 (or 29047 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 238220784 is about 15434.4026123462. The cubic root of 238220784 is about 619.9070134567.

The spelling of 238220784 in words is "two hundred thirty-eight million, two hundred twenty thousand, seven hundred eighty-four".