428553247686 has 16 divisors (see below), whose sum is σ = 857228034864. Its totient is φ = 142830825984.

The previous prime is 428553247663. The next prime is 428553247693. The reversal of 428553247686 is 686742355824.

It is a super-2 number, since 2×428553247686² (a number of 24 digits) contains 22 as substring.

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, 5018275 + ... + 5102958.

It is an arithmetic number, because the mean of its divisors is an integer number (53576752179).

Almost surely, 2^428553247686 is an apocalyptic number.

428553247686 is an abundant number, since it is smaller than the sum of its proper divisors (428674787178).

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

428553247686 is a wasteful number, since it uses less digits than its factorization.

428553247686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10128295.

The product of its digits is 77414400, while the sum is 60.

The spelling of 428553247686 in words is "four hundred twenty-eight billion, five hundred fifty-three million, two hundred forty-seven thousand, six hundred eighty-six".