20854493 has 8 divisors (see below), whose sum is σ = 23180256. Its totient is φ = 18600400.

The previous prime is 20854469. The next prime is 20854523. The reversal of 20854493 is 39445802.

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 20854493 - 2⁶ = 20854429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854693) 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, 17303 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (2897532).

Almost surely, 2^20854493 is an apocalyptic number.

It is an amenable number.

20854493 is a deficient number, since it is larger than the sum of its proper divisors (2325763).

20854493 is a wasteful number, since it uses less digits than its factorization.

20854493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35835.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 20854493 is about 4566.6719829653. The cubic root of 20854493 is about 275.2537294602.

The spelling of 20854493 in words is "twenty million, eight hundred fifty-four thousand, four hundred ninety-three".