20774005 has 32 divisors (see below), whose sum is σ = 29917440. Its totient is φ = 13547520.

The previous prime is 20773997. The next prime is 20774009. The reversal of 20774005 is 50047702.

It is not a de Polignac number, because 20774005 - 2³ = 20773997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98350 + ... + 98560.

It is an arithmetic number, because the mean of its divisors is an integer number (934920).

Almost surely, 2^20774005 is an apocalyptic number.

It is an amenable number.

20774005 is a deficient number, since it is larger than the sum of its proper divisors (9143435).

20774005 is a wasteful number, since it uses less digits than its factorization.

20774005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 20774005 is about 4557.8509190187. The cubic root of 20774005 is about 274.8991586187.

The spelling of 20774005 in words is "twenty million, seven hundred seventy-four thousand, five".