428691783480 has 64 divisors (see below), whose sum is σ = 1315984095360. Its totient is φ = 111659253888.

The previous prime is 428691783473. The next prime is 428691783511. The reversal of 428691783480 is 84387196824.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41534742 + ... + 41545061.

It is an arithmetic number, because the mean of its divisors is an integer number (20562251490).

Almost surely, 2^428691783480 is an apocalyptic number.

428691783480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428691783480 is an abundant number, since it is smaller than the sum of its proper divisors (887292311880).

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

428691783480 is a wasteful number, since it uses less digits than its factorization.

428691783480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83079860 (or 83079856 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 428691783480 in words is "four hundred twenty-eight billion, six hundred ninety-one million, seven hundred eighty-three thousand, four hundred eighty".