431958228 has 96 divisors (see below), whose sum is σ = 1115995776. Its totient is φ = 129226752.

The previous prime is 431958227. The next prime is 431958229. The reversal of 431958228 is 822859134.

It is an interprime number because it is at equal distance from previous prime (431958227) and next prime (431958229).

It is a self number, because there is not a number n which added to its sum of digits gives 431958228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431958223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 944976 + ... + 945432.

It is an arithmetic number, because the mean of its divisors is an integer number (11624956).

Almost surely, 2^431958228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431958228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557997888).

431958228 is an abundant number, since it is smaller than the sum of its proper divisors (684037548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431958228 is a wasteful number, since it uses less digits than its factorization.

431958228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 631 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 431958228 is about 20783.6047883903. The cubic root of 431958228 is about 755.9282636784.

The spelling of 431958228 in words is "four hundred thirty-one million, nine hundred fifty-eight thousand, two hundred twenty-eight".