238002505 has 16 divisors (see below), whose sum is σ = 320947200. Its totient is φ = 168113088.

The previous prime is 238002491. The next prime is 238002509. The reversal of 238002505 is 505200832.

238002505 = 208² + 209² + ... + 897².

238002505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238002505 - 2¹¹ = 238000457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238002505.

It is not an unprimeable number, because it can be changed into a prime (238002509) 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, 78105 + ... + 81094.

It is an arithmetic number, because the mean of its divisors is an integer number (20059200).

Almost surely, 2^238002505 is an apocalyptic number.

It is an amenable number.

238002505 is a deficient number, since it is larger than the sum of its proper divisors (82944695).

238002505 is a wasteful number, since it uses less digits than its factorization.

238002505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159240.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 238002505 is about 15427.3298078443. The cubic root of 238002505 is about 619.7176176782.

The spelling of 238002505 in words is "two hundred thirty-eight million, two thousand, five hundred five".