28148401886 has 8 divisors (see below), whose sum is σ = 46061021304. Its totient is φ = 12794728120.

The previous prime is 28148401873. The next prime is 28148401909. The reversal of 28148401886 is 68810484182.

28148401886 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×28148401886³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639736385 + ... + 639736428.

It is an arithmetic number, because the mean of its divisors is an integer number (5757627663).

Almost surely, 2^28148401886 is an apocalyptic number.

28148401886 is a deficient number, since it is larger than the sum of its proper divisors (17912619418).

28148401886 is a wasteful number, since it uses less digits than its factorization.

28148401886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279472826.

The product of its (nonzero) digits is 786432, while the sum is 50.

It can be divided in two parts, 28148 and 401886, that added together give a palindrome (430034).

The spelling of 28148401886 in words is "twenty-eight billion, one hundred forty-eight million, four hundred one thousand, eight hundred eighty-six".