20366845 has 32 divisors (see below), whose sum is σ = 27371520. Its totient is φ = 14488320.

The previous prime is 20366809. The next prime is 20366851. The reversal of 20366845 is 54866302.

It is a happy number.

It is not a de Polignac number, because 20366845 - 2²³ = 11978237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20366845.

It is a congruent number.

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, 103287 + ... + 103483.

It is an arithmetic number, because the mean of its divisors is an integer number (855360).

Almost surely, 2^20366845 is an apocalyptic number.

It is an amenable number.

20366845 is a deficient number, since it is larger than the sum of its proper divisors (7004675).

20366845 is a wasteful number, since it uses less digits than its factorization.

20366845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 20366845 is about 4512.9641035577. The cubic root of 20366845 is about 273.0913343225.

The spelling of 20366845 in words is "twenty million, three hundred sixty-six thousand, eight hundred forty-five".