428936508623 has 32 divisors (see below), whose sum is σ = 524645706240. Its totient is φ = 342486610560.

The previous prime is 428936508617. The next prime is 428936508631. The reversal of 428936508623 is 326805639824.

It is a cyclic number.

It is not a de Polignac number, because 428936508623 - 2²⁶ = 428869399759 is a prime.

It is a super-2 number, since 2×428936508623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428936508613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31820561 + ... + 31834037.

It is an arithmetic number, because the mean of its divisors is an integer number (16395178320).

Almost surely, 2^428936508623 is an apocalyptic number.

428936508623 is a deficient number, since it is larger than the sum of its proper divisors (95709197617).

428936508623 is a wasteful number, since it uses less digits than its factorization.

428936508623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487.

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 428936508623 in words is "four hundred twenty-eight billion, nine hundred thirty-six million, five hundred eight thousand, six hundred twenty-three".