28148268136 has 16 divisors (see below), whose sum is σ = 52793173440. Its totient is φ = 14070088560.

The previous prime is 28148268133. The next prime is 28148268139. The reversal of 28148268136 is 63186284182.

It is an interprime number because it is at equal distance from previous prime (28148268133) and next prime (28148268139).

It is a self number, because there is not a number n which added to its sum of digits gives 28148268136.

It is not an unprimeable number, because it can be changed into a prime (28148268133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476016 + ... + 531871.

It is an arithmetic number, because the mean of its divisors is an integer number (3299573340).

Almost surely, 2^28148268136 is an apocalyptic number.

It is an amenable number.

28148268136 is a deficient number, since it is larger than the sum of its proper divisors (24644905304).

28148268136 is a wasteful number, since it uses less digits than its factorization.

28148268136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011384 (or 1011380 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The spelling of 28148268136 in words is "twenty-eight billion, one hundred forty-eight million, two hundred sixty-eight thousand, one hundred thirty-six".