184228021 has 4 divisors (see below), whose sum is σ = 184398592. Its totient is φ = 184057452.

The previous prime is 184228019. The next prime is 184228027. The reversal of 184228021 is 120822481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 184228021 - 2¹ = 184228019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184228027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83655 + ... + 85828.

It is an arithmetic number, because the mean of its divisors is an integer number (46099648).

Almost surely, 2^184228021 is an apocalyptic number.

It is an amenable number.

184228021 is a deficient number, since it is larger than the sum of its proper divisors (170571).

184228021 is a wasteful number, since it uses less digits than its factorization.

184228021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170570.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 184228021 is about 13573.0623294819. The cubic root of 184228021 is about 569.0082487636.

The spelling of 184228021 in words is "one hundred eighty-four million, two hundred twenty-eight thousand, twenty-one".