20894545 has 8 divisors (see below), whose sum is σ = 28655424. Its totient is φ = 14327664.

The previous prime is 20894501. The next prime is 20894551. The reversal of 20894545 is 54549802.

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 20894545 - 2⁷ = 20894417 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, 298459 + ... + 298528.

It is an arithmetic number, because the mean of its divisors is an integer number (3581928).

Almost surely, 2^20894545 is an apocalyptic number.

It is an amenable number.

20894545 is a deficient number, since it is larger than the sum of its proper divisors (7760879).

20894545 is an equidigital number, since it uses as much as digits as its factorization.

20894545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596999.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20894545 is about 4571.0551298360. The cubic root of 20894545 is about 275.4298291978.

The spelling of 20894545 in words is "twenty million, eight hundred ninety-four thousand, five hundred forty-five".