20258745 has 32 divisors (see below), whose sum is σ = 36433152. Its totient is φ = 9537792.

The previous prime is 20258737. The next prime is 20258759. The reversal of 20258745 is 54785202.

It is not a de Polignac number, because 20258745 - 2³ = 20258737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2227 + ... + 6743.

It is an arithmetic number, because the mean of its divisors is an integer number (1138536).

Almost surely, 2^20258745 is an apocalyptic number.

It is an amenable number.

20258745 is a deficient number, since it is larger than the sum of its proper divisors (16174407).

20258745 is a wasteful number, since it uses less digits than its factorization.

20258745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 20258745 is about 4500.9715617853. The cubic root of 20258745 is about 272.6073196227.

The spelling of 20258745 in words is "twenty million, two hundred fifty-eight thousand, seven hundred forty-five".