428289837 has 16 divisors (see below), whose sum is σ = 588309312. Its totient is φ = 276946560.

The previous prime is 428289809. The next prime is 428289839. The reversal of 428289837 is 738982824.

It is not a de Polignac number, because 428289837 - 2¹⁸ = 428027693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428289837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428289839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30913 + ... + 42569.

It is an arithmetic number, because the mean of its divisors is an integer number (36769332).

Almost surely, 2^428289837 is an apocalyptic number.

It is an amenable number.

428289837 is a deficient number, since it is larger than the sum of its proper divisors (160019475).

428289837 is a wasteful number, since it uses less digits than its factorization.

428289837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12028.

The product of its digits is 1548288, while the sum is 51.

The square root of 428289837 is about 20695.1645801622. The cubic root of 428289837 is about 753.7822786492.

The spelling of 428289837 in words is "four hundred twenty-eight million, two hundred eighty-nine thousand, eight hundred thirty-seven".