238892440 has 16 divisors (see below), whose sum is σ = 537508080. Its totient is φ = 95556960.

The previous prime is 238892393. The next prime is 238892443. The reversal of 238892440 is 44298832.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 5972311 = 238892440 / (2 + 3 + 8 + 8 + 9 + 2 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 238892393 and 238892402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238892443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2986116 + ... + 2986195.

It is an arithmetic number, because the mean of its divisors is an integer number (33594255).

Almost surely, 2^238892440 is an apocalyptic number.

238892440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238892440 is an abundant number, since it is smaller than the sum of its proper divisors (298615640).

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

238892440 is a wasteful number, since it uses less digits than its factorization.

238892440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972322 (or 5972318 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 238892440 is about 15456.1457032470. The cubic root of 238892440 is about 620.4890695382.

The spelling of 238892440 in words is "two hundred thirty-eight million, eight hundred ninety-two thousand, four hundred forty".