20073523 has 8 divisors (see below), whose sum is σ = 20883456. Its totient is φ = 19273800.

The previous prime is 20073517. The next prime is 20073533. The reversal of 20073523 is 32537002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20073523 - 2¹⁷ = 19942451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20073494 and 20073503.

It is not an unprimeable number, because it can be changed into a prime (20073533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (2610432).

Almost surely, 2^20073523 is an apocalyptic number.

20073523 is a deficient number, since it is larger than the sum of its proper divisors (809933).

20073523 is a wasteful number, since it uses less digits than its factorization.

20073523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 20073523 is about 4480.3485355494. The cubic root of 20073523 is about 271.7739751133.

The spelling of 20073523 in words is "twenty million, seventy-three thousand, five hundred twenty-three".