28573143787238 has 4 divisors (see below), whose sum is σ = 42859715680860. Its totient is φ = 14286571893618.

The previous prime is 28573143787231. The next prime is 28573143787259. The reversal of 28573143787238 is 83278734137582.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573143787231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7143285946808 + ... + 7143285946811.

It is an arithmetic number, because the mean of its divisors is an integer number (10714928920215).

Almost surely, 2^{28573143787238} is an apocalyptic number.

28573143787238 is a deficient number, since it is larger than the sum of its proper divisors (14286571893622).

28573143787238 is a wasteful number, since it uses less digits than its factorization.

28573143787238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286571893621.

The product of its digits is 379330560, while the sum is 68.

The spelling of 28573143787238 in words is "twenty-eight trillion, five hundred seventy-three billion, one hundred forty-three million, seven hundred eighty-seven thousand, two hundred thirty-eight".