20267445 has 16 divisors (see below), whose sum is σ = 35376192. Its totient is φ = 9826560.

The previous prime is 20267441. The next prime is 20267473. The reversal of 20267445 is 54476202.

It is not a de Polignac number, because 20267445 - 2² = 20267441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20267441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61252 + ... + 61581.

It is an arithmetic number, because the mean of its divisors is an integer number (2211012).

Almost surely, 2^20267445 is an apocalyptic number.

It is an amenable number.

20267445 is a deficient number, since it is larger than the sum of its proper divisors (15108747).

20267445 is a wasteful number, since it uses less digits than its factorization.

20267445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122852.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 20267445 is about 4501.9379160535. The cubic root of 20267445 is about 272.6463372463.

The spelling of 20267445 in words is "twenty million, two hundred sixty-seven thousand, four hundred forty-five".