428365811 has 8 divisors (see below), whose sum is σ = 455979600. Its totient is φ = 401258880.

The previous prime is 428365789. The next prime is 428365831. The reversal of 428365811 is 118563824.

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 428365811 - 2¹⁰ = 428364787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428365831) 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, 124970 + ... + 128351.

It is an arithmetic number, because the mean of its divisors is an integer number (56997450).

Almost surely, 2^428365811 is an apocalyptic number.

428365811 is a deficient number, since it is larger than the sum of its proper divisors (27613789).

428365811 is a wasteful number, since it uses less digits than its factorization.

428365811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253429.

The product of its digits is 46080, while the sum is 38.

The square root of 428365811 is about 20697.0000483162. Note that the first 4 decimals coincide. The cubic root of 428365811 is about 753.8268469641.

The spelling of 428365811 in words is "four hundred twenty-eight million, three hundred sixty-five thousand, eight hundred eleven".