428495991426 has 24 divisors (see below), whose sum is σ = 928421558064. Its totient is φ = 142829908440.

The previous prime is 428495991421. The next prime is 428495991433. The reversal of 428495991426 is 624199594824.

428495991426 is a `hidden beast` number, since 4 + 2 + 8 + 4 + 9 + 599 + 14 + 26 = 666.

It is not an unprimeable number, because it can be changed into a prime (428495991421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1555525 + ... + 1810151.

It is an arithmetic number, because the mean of its divisors is an integer number (38684231586).

Almost surely, 2^428495991426 is an apocalyptic number.

428495991426 is an abundant number, since it is smaller than the sum of its proper divisors (499925566638).

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

428495991426 is a wasteful number, since it uses less digits than its factorization.

428495991426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348126 (or 348123 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 428495991426 in words is "four hundred twenty-eight billion, four hundred ninety-five million, nine hundred ninety-one thousand, four hundred twenty-six".