20774371 has 8 divisors (see below), whose sum is σ = 21648384. Its totient is φ = 19913160.

The previous prime is 20774363. The next prime is 20774381. The reversal of 20774371 is 17347702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20774371 - 2³ = 20774363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20774321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 6448.

It is an arithmetic number, because the mean of its divisors is an integer number (2706048).

Almost surely, 2^20774371 is an apocalyptic number.

20774371 is a deficient number, since it is larger than the sum of its proper divisors (874013).

20774371 is a wasteful number, since it uses less digits than its factorization.

20774371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 20774371 is about 4557.8910693434. The cubic root of 20774371 is about 274.9007730161.

The spelling of 20774371 in words is "twenty million, seven hundred seventy-four thousand, three hundred seventy-one".