238783545 has 320 divisors, whose sum is σ = 624476160. Its totient is φ = 83980800.

The previous prime is 238783543. The next prime is 238783609. The reversal of 238783545 is 545387832.

238783545 is a `hidden beast` number, since 2 + 38 + 78 + 3 + 545 = 666.

It is not a de Polignac number, because 238783545 - 2¹ = 238783543 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 238783545.

It is not an unprimeable number, because it can be changed into a prime (238783543) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 7702680 + ... + 7702710.

It is an arithmetic number, because the mean of its divisors is an integer number (1951488).

Almost surely, 2^238783545 is an apocalyptic number.

It is an amenable number.

238783545 is an abundant number, since it is smaller than the sum of its proper divisors (385692615).

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

238783545 is a wasteful number, since it uses less digits than its factorization.

238783545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 89 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 238783545 is about 15452.6225929452. The cubic root of 238783545 is about 620.3947754612.

The spelling of 238783545 in words is "two hundred thirty-eight million, seven hundred eighty-three thousand, five hundred forty-five".