423628057520 has 40 divisors (see below), whose sum is σ = 1011555111984. Its totient is φ = 164871459072.

The previous prime is 423628057511. The next prime is 423628057553. The reversal of 423628057520 is 25750826324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×423628057520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71555834 + ... + 71561753.

Almost surely, 2^423628057520 is an apocalyptic number.

423628057520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423628057520 is an abundant number, since it is smaller than the sum of its proper divisors (587927054464).

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

423628057520 is a wasteful number, since it uses less digits than its factorization.

423628057520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143117637 (or 143117631 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 423628057520 in words is "four hundred twenty-three billion, six hundred twenty-eight million, fifty-seven thousand, five hundred twenty".