428184085 has 16 divisors (see below), whose sum is σ = 598306176. Its totient is φ = 288070848.

The previous prime is 428184041. The next prime is 428184089. The reversal of 428184085 is 580481824.

It is a cyclic number.

It is not a de Polignac number, because 428184085 - 2¹⁹ = 427659797 is a prime.

It is a super-2 number, since 2×428184085² = 366683221294574450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428184089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113559 + ... + 117268.

It is an arithmetic number, because the mean of its divisors is an integer number (37394136).

Almost surely, 2^428184085 is an apocalyptic number.

It is an amenable number.

428184085 is a deficient number, since it is larger than the sum of its proper divisors (170122091).

428184085 is a wasteful number, since it uses less digits than its factorization.

428184085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230892.

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 428184085 is about 20692.6094294557. The cubic root of 428184085 is about 753.7202330138.

The spelling of 428184085 in words is "four hundred twenty-eight million, one hundred eighty-four thousand, eighty-five".