238224978 has 24 divisors (see below), whose sum is σ = 546516828. Its totient is φ = 74737152.

The previous prime is 238224929. The next prime is 238224991. The reversal of 238224978 is 879422832.

It can be written as a sum of positive squares in 2 ways, for example, as 202977009 + 35247969 = 14247^2 + 5937^2 .

It is a super-2 number, since 2×238224978² = 113502280286200968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388951 + ... + 389562.

Almost surely, 2^238224978 is an apocalyptic number.

238224978 is an abundant number, since it is smaller than the sum of its proper divisors (308291850).

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

238224978 is a wasteful number, since it uses less digits than its factorization.

238224978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778538 (or 778535 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 238224978 is about 15434.5384770650. The cubic root of 238224978 is about 619.9106513632.

The spelling of 238224978 in words is "two hundred thirty-eight million, two hundred twenty-four thousand, nine hundred seventy-eight".