20547446 has 4 divisors (see below), whose sum is σ = 30821172. Its totient is φ = 10273722.

The previous prime is 20547433. The next prime is 20547463. The reversal of 20547446 is 64474502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5136860 + ... + 5136863.

It is an arithmetic number, because the mean of its divisors is an integer number (7705293).

Almost surely, 2^20547446 is an apocalyptic number.

20547446 is a deficient number, since it is larger than the sum of its proper divisors (10273726).

20547446 is a wasteful number, since it uses less digits than its factorization.

20547446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273725.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 20547446 is about 4532.9290751125. The cubic root of 20547446 is about 273.8961636134.

The spelling of 20547446 in words is "twenty million, five hundred forty-seven thousand, four hundred forty-six".