20470367 has 4 divisors (see below), whose sum is σ = 20482176. Its totient is φ = 20458560.

The previous prime is 20470343. The next prime is 20470369. The reversal of 20470367 is 76307402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76307402 = 2 ⋅38153701.

It is a cyclic number.

It is not a de Polignac number, because 20470367 - 2²⁰ = 19421791 is a prime.

It is a super-2 number, since 2×20470367² = 838071850229378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2738 + ... + 6959.

It is an arithmetic number, because the mean of its divisors is an integer number (5120544).

Almost surely, 2^20470367 is an apocalyptic number.

20470367 is a deficient number, since it is larger than the sum of its proper divisors (11809).

20470367 is an equidigital number, since it uses as much as digits as its factorization.

20470367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20470367 is about 4524.4189682212. The cubic root of 20470367 is about 273.5532483912.

Adding to 20470367 its reverse (76307402), we get a palindrome (96777769).

The spelling of 20470367 in words is "twenty million, four hundred seventy thousand, three hundred sixty-seven".