28214136 has 32 divisors (see below), whose sum is σ = 78373200. Its totient is φ = 9404640.

The previous prime is 28214119. The next prime is 28214141. The reversal of 28214136 is 63141282.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65095 + ... + 65526.

Almost surely, 2^28214136 is an apocalyptic number.

It is an amenable number.

28214136 is an abundant number, since it is smaller than the sum of its proper divisors (50159064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28214136 is a wasteful number, since it uses less digits than its factorization.

28214136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130636 (or 130626 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 28214136 is about 5311.6980335859. The cubic root of 28214136 is about 304.4310309958.

The spelling of 28214136 in words is "twenty-eight million, two hundred fourteen thousand, one hundred thirty-six".