20954473 has 8 divisors (see below), whose sum is σ = 22100000. Its totient is φ = 19813248.

The previous prime is 20954467. The next prime is 20954497. The reversal of 20954473 is 37445902.

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 20954473 - 2⁵ = 20954441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20954413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16153 + ... + 17401.

It is an arithmetic number, because the mean of its divisors is an integer number (2762500).

Almost surely, 2^20954473 is an apocalyptic number.

It is an amenable number.

20954473 is a deficient number, since it is larger than the sum of its proper divisors (1145527).

20954473 is a wasteful number, since it uses less digits than its factorization.

20954473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 20954473 is about 4577.6055968159. The cubic root of 20954473 is about 275.6928995121.

The spelling of 20954473 in words is "twenty million, nine hundred fifty-four thousand, four hundred seventy-three".