428888811 has 8 divisors (see below), whose sum is σ = 615840400. Its totient is φ = 263931552.

The previous prime is 428888791. The next prime is 428888827. The reversal of 428888811 is 118888824.

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

It is not a de Polignac number, because 428888811 - 2²² = 424694507 is a prime.

It is a super-2 number, since 2×428888811² = 367891224401987442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428888851) 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, 5498536 + ... + 5498613.

It is an arithmetic number, because the mean of its divisors is an integer number (76980050).

Almost surely, 2^428888811 is an apocalyptic number.

428888811 is a deficient number, since it is larger than the sum of its proper divisors (186951589).

428888811 is a wasteful number, since it uses less digits than its factorization.

428888811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10997165.

The product of its digits is 262144, while the sum is 48.

The square root of 428888811 is about 20709.6308755130. The cubic root of 428888811 is about 754.1335093929.

The spelling of 428888811 in words is "four hundred twenty-eight million, eight hundred eighty-eight thousand, eight hundred eleven".