428486774526 has 64 divisors (see below), whose sum is σ = 999082506240. Its totient is φ = 135864099360.

The previous prime is 428486774489. The next prime is 428486774537. The reversal of 428486774526 is 625477684824.

It is a happy number.

428486774526 is a `hidden beast` number, since 4 + 2 + 8 + 48 + 67 + 7 + 4 + 526 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 728230 + ... + 1177833.

It is an arithmetic number, because the mean of its divisors is an integer number (15610664160).

Almost surely, 2^428486774526 is an apocalyptic number.

428486774526 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

428486774526 is an abundant number, since it is smaller than the sum of its proper divisors (570595731714).

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

428486774526 is a wasteful number, since it uses less digits than its factorization.

428486774526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906278 (or 1906272 counting only the distinct ones).

The product of its digits is 144506880, while the sum is 63.

The spelling of 428486774526 in words is "four hundred twenty-eight billion, four hundred eighty-six million, seven hundred seventy-four thousand, five hundred twenty-six".