28342136 has 8 divisors (see below), whose sum is σ = 53141520. Its totient is φ = 14171064.

The previous prime is 28342133. The next prime is 28342157. The reversal of 28342136 is 63124382.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28342099 and 28342108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28342133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1771376 + ... + 1771391.

It is an arithmetic number, because the mean of its divisors is an integer number (6642690).

Almost surely, 2^28342136 is an apocalyptic number.

It is an amenable number.

28342136 is a deficient number, since it is larger than the sum of its proper divisors (24799384).

28342136 is a wasteful number, since it uses less digits than its factorization.

28342136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542773 (or 3542769 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 28342136 is about 5323.7332765645. The cubic root of 28342136 is about 304.8907106419.

The spelling of 28342136 in words is "twenty-eight million, three hundred forty-two thousand, one hundred thirty-six".