428185477 has 8 divisors (see below), whose sum is σ = 454177152. Its totient is φ = 402283200.

The previous prime is 428185399. The next prime is 428185517. The reversal of 428185477 is 774581824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428185477 - 2²⁷ = 293967749 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 (428185777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12349 + ... + 31762.

It is an arithmetic number, because the mean of its divisors is an integer number (56772144).

Almost surely, 2^428185477 is an apocalyptic number.

It is an amenable number.

428185477 is a deficient number, since it is larger than the sum of its proper divisors (25991675).

428185477 is a wasteful number, since it uses less digits than its factorization.

428185477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44699.

The product of its digits is 501760, while the sum is 46.

The square root of 428185477 is about 20692.6430646256. The cubic root of 428185477 is about 753.7210497788.

It can be divided in two parts, 4 and 28185477, that added together give a square (28185481 = 5309²).

The spelling of 428185477 in words is "four hundred twenty-eight million, one hundred eighty-five thousand, four hundred seventy-seven".