28050139 has 8 divisors (see below), whose sum is σ = 30251312. Its totient is φ = 25855200.

The previous prime is 28050083. The next prime is 28050149. The reversal of 28050139 is 93105082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28050139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28050149) 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, 12637 + ... + 14689.

It is an arithmetic number, because the mean of its divisors is an integer number (3781414).

Almost surely, 2^28050139 is an apocalyptic number.

28050139 is a deficient number, since it is larger than the sum of its proper divisors (2201173).

28050139 is a wasteful number, since it uses less digits than its factorization.

28050139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28050139 is about 5296.2381932840. The cubic root of 28050139 is about 303.8400409339.

The spelling of 28050139 in words is "twenty-eight million, fifty thousand, one hundred thirty-nine".