428691397000 has 128 divisors (see below), whose sum is σ = 1077108814080. Its totient is φ = 159116160000.

The previous prime is 428691396937. The next prime is 428691397009. The reversal of 428691397000 is 793196824.

It is not an unprimeable number, because it can be changed into a prime (428691397009) 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, 1029415 + ... + 1384585.

It is an arithmetic number, because the mean of its divisors is an integer number (8414912610).

Almost surely, 2^428691397000 is an apocalyptic number.

428691397000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428691397000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538554407040).

428691397000 is an abundant number, since it is smaller than the sum of its proper divisors (648417417080).

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

428691397000 is a wasteful number, since it uses less digits than its factorization.

428691397000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355280 (or 355266 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 428691397000 in words is "four hundred twenty-eight billion, six hundred ninety-one million, three hundred ninety-seven thousand".