428494209648 has 40 divisors (see below), whose sum is σ = 1172057693328. Its totient is φ = 134429555712.

The previous prime is 428494209613. The next prime is 428494209679. The reversal of 428494209648 is 846902494824.

It is a junction number, because it is equal to n+sod(n) for n = 428494209591 and 428494209600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262556911 + ... + 262558542.

Almost surely, 2^428494209648 is an apocalyptic number.

428494209648 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428494209648 is an abundant number, since it is smaller than the sum of its proper divisors (743563483680).

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

428494209648 is a wasteful number, since it uses less digits than its factorization.

428494209648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525115481 (or 525115475 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 60.

The spelling of 428494209648 in words is "four hundred twenty-eight billion, four hundred ninety-four million, two hundred nine thousand, six hundred forty-eight".