428302206623 has 4 divisors (see below), whose sum is σ = 431428500240. Its totient is φ = 425175913008.

The previous prime is 428302206617. The next prime is 428302206659. The reversal of 428302206623 is 326602203824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428302206623 - 2⁶ = 428302206559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428302206323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1563146603 + ... + 1563146876.

It is an arithmetic number, because the mean of its divisors is an integer number (107857125060).

Almost surely, 2^428302206623 is an apocalyptic number.

428302206623 is a deficient number, since it is larger than the sum of its proper divisors (3126293617).

428302206623 is a wasteful number, since it uses less digits than its factorization.

428302206623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126293616.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 428302206623 in words is "four hundred twenty-eight billion, three hundred two million, two hundred six thousand, six hundred twenty-three".