238779720 has 96 divisors (see below), whose sum is σ = 778377600. Its totient is φ = 63482496.

The previous prime is 238779719. The next prime is 238779757. The reversal of 238779720 is 27977832.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150049 + ... + 151631.

It is an arithmetic number, because the mean of its divisors is an integer number (8108100).

Almost surely, 2^238779720 is an apocalyptic number.

238779720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238779720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389188800).

238779720 is an abundant number, since it is smaller than the sum of its proper divisors (539597880).

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

238779720 is a wasteful number, since it uses less digits than its factorization.

238779720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 238779720 is about 15452.4988270506. The cubic root of 238779720 is about 620.3914628059.

The spelling of 238779720 in words is "two hundred thirty-eight million, seven hundred seventy-nine thousand, seven hundred twenty".