428165837 has 8 divisors (see below), whose sum is σ = 467819712. Its totient is φ = 388633600.

The previous prime is 428165827. The next prime is 428165863. The reversal of 428165837 is 738561824.

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 428165837 - 2¹⁰ = 428164813 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 (428165807) 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, 22964 + ... + 37197.

It is an arithmetic number, because the mean of its divisors is an integer number (58477464).

Almost surely, 2^428165837 is an apocalyptic number.

It is an amenable number.

428165837 is a deficient number, since it is larger than the sum of its proper divisors (39653875).

428165837 is a wasteful number, since it uses less digits than its factorization.

428165837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60819.

The product of its digits is 322560, while the sum is 44.

The square root of 428165837 is about 20692.1684943845. The cubic root of 428165837 is about 753.7095257170.

The spelling of 428165837 in words is "four hundred twenty-eight million, one hundred sixty-five thousand, eight hundred thirty-seven".