428446811 has 4 divisors (see below), whose sum is σ = 461404272. Its totient is φ = 395489352.

The previous prime is 428446793. The next prime is 428446817. The reversal of 428446811 is 118644824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428446811 - 2¹⁸ = 428184667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428446817) 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, 16478711 + ... + 16478736.

It is an arithmetic number, because the mean of its divisors is an integer number (115351068).

Almost surely, 2^428446811 is an apocalyptic number.

428446811 is a deficient number, since it is larger than the sum of its proper divisors (32957461).

428446811 is a wasteful number, since it uses less digits than its factorization.

428446811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32957460.

The product of its digits is 49152, while the sum is 38.

The square root of 428446811 is about 20698.9567611510. The cubic root of 428446811 is about 753.8743578569.

The spelling of 428446811 in words is "four hundred twenty-eight million, four hundred forty-six thousand, eight hundred eleven".