428601972 has 24 divisors (see below), whose sum is σ = 1000421856. Its totient is φ = 142817248.

The previous prime is 428601967. The next prime is 428601973. The reversal of 428601972 is 279106824.

It is a self number, because there is not a number n which added to its sum of digits gives 428601972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428601973) 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, 48703 + ... + 56825.

It is an arithmetic number, because the mean of its divisors is an integer number (41684244).

Almost surely, 2^428601972 is an apocalyptic number.

It is an amenable number.

428601972 is an abundant number, since it is smaller than the sum of its proper divisors (571819884).

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

428601972 is a wasteful number, since it uses less digits than its factorization.

428601972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12527 (or 12525 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 428601972 is about 20702.7044610119. The cubic root of 428601972 is about 753.9653514791.

The spelling of 428601972 in words is "four hundred twenty-eight million, six hundred one thousand, nine hundred seventy-two".