428630943 has 16 divisors (see below), whose sum is σ = 617936256. Its totient is φ = 262716000.

The previous prime is 428630897. The next prime is 428630953. The reversal of 428630943 is 349036824.

It is not a de Polignac number, because 428630943 - 2⁶ = 428630879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428630953) 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, 12105 + ... + 31682.

It is an arithmetic number, because the mean of its divisors is an integer number (38621016).

Almost surely, 2^428630943 is an apocalyptic number.

428630943 is a deficient number, since it is larger than the sum of its proper divisors (189305313).

428630943 is a wasteful number, since it uses less digits than its factorization.

428630943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44054.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 428630943 is about 20703.4041403823. The cubic root of 428630943 is about 753.9823389869.

The spelling of 428630943 in words is "four hundred twenty-eight million, six hundred thirty thousand, nine hundred forty-three".