20239473 has 8 divisors (see below), whose sum is σ = 27366336. Its totient is φ = 13302800.

The previous prime is 20239463. The next prime is 20239487. The reversal of 20239473 is 37493202.

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 20239473 - 2⁶ = 20239409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20239473.

It is not an unprimeable number, because it can be changed into a prime (20239403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47298 + ... + 47723.

It is an arithmetic number, because the mean of its divisors is an integer number (3420792).

Almost surely, 2^20239473 is an apocalyptic number.

It is an amenable number.

20239473 is a deficient number, since it is larger than the sum of its proper divisors (7126863).

20239473 is an equidigital number, since it uses as much as digits as its factorization.

20239473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95095.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 20239473 is about 4498.8301812805. The cubic root of 20239473 is about 272.5208490627.

The spelling of 20239473 in words is "twenty million, two hundred thirty-nine thousand, four hundred seventy-three".