28538190139 has 8 divisors (see below), whose sum is σ = 30261818160. Its totient is φ = 26819552256.

The previous prime is 28538190119. The next prime is 28538190157. The reversal of 28538190139 is 93109183582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28538190139 - 2²⁵ = 28504635707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28538190092 and 28538190101.

It is not an unprimeable number, because it can be changed into a prime (28538190119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235749 + ... + 1258630.

It is an arithmetic number, because the mean of its divisors is an integer number (3782727270).

Almost surely, 2^28538190139 is an apocalyptic number.

28538190139 is a deficient number, since it is larger than the sum of its proper divisors (1723628021).

28538190139 is a wasteful number, since it uses less digits than its factorization.

28538190139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495069.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 28538190139 in words is "twenty-eight billion, five hundred thirty-eight million, one hundred ninety thousand, one hundred thirty-nine".