20774393 has 8 divisors (see below), whose sum is σ = 21262080. Its totient is φ = 20292480.

The previous prime is 20774381. The next prime is 20774401. The reversal of 20774393 is 39347702.

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

It is a cyclic number.

It is not a de Polignac number, because 20774393 - 2¹⁸ = 20512249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20774363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6308 + ... + 9018.

It is an arithmetic number, because the mean of its divisors is an integer number (2657760).

Almost surely, 2^20774393 is an apocalyptic number.

It is an amenable number.

20774393 is a deficient number, since it is larger than the sum of its proper divisors (487687).

20774393 is an equidigital number, since it uses as much as digits as its factorization.

20774393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 20774393 is about 4557.8934827396. The cubic root of 20774393 is about 274.9008700558.

It can be divided in two parts, 207 and 74393, that multiplied together give a palindrome (15399351).

The spelling of 20774393 in words is "twenty million, seven hundred seventy-four thousand, three hundred ninety-three".