20952305 has 8 divisors (see below), whose sum is σ = 27428544. Its totient is φ = 15238000.

The previous prime is 20952293. The next prime is 20952319. The reversal of 20952305 is 50325902.

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

It is not a de Polignac number, because 20952305 - 2⁴ = 20952289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190421 + ... + 190530.

It is an arithmetic number, because the mean of its divisors is an integer number (3428568).

Almost surely, 2^20952305 is an apocalyptic number.

It is an amenable number.

20952305 is a deficient number, since it is larger than the sum of its proper divisors (6476239).

20952305 is a wasteful number, since it uses less digits than its factorization.

20952305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380967.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 20952305 is about 4577.3687856672. The cubic root of 20952305 is about 275.6833912348.

The spelling of 20952305 in words is "twenty million, nine hundred fifty-two thousand, three hundred five".