28425020238 has 24 divisors (see below), whose sum is σ = 65210341248. Its totient is φ = 8917653312.

The previous prime is 28425020237. The next prime is 28425020249. The reversal of 28425020238 is 83202052482.

28425020238 is a `hidden beast` number, since 28 + 425 + 0 + 202 + 3 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28425020231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46445806 + ... + 46446417.

It is an arithmetic number, because the mean of its divisors is an integer number (2717097552).

Almost surely, 2^28425020238 is an apocalyptic number.

28425020238 is an abundant number, since it is smaller than the sum of its proper divisors (36785321010).

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

28425020238 is a wasteful number, since it uses less digits than its factorization.

28425020238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92892248 (or 92892245 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 28425020238 in words is "twenty-eight billion, four hundred twenty-five million, twenty thousand, two hundred thirty-eight".