20470474 has 8 divisors (see below), whose sum is σ = 31359168. Its totient is φ = 10017420.

The previous prime is 20470469. The next prime is 20470487. The reversal of 20470474 is 47407402.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108792 + ... + 108979.

It is an arithmetic number, because the mean of its divisors is an integer number (3919896).

Almost surely, 2^20470474 is an apocalyptic number.

20470474 is a deficient number, since it is larger than the sum of its proper divisors (10888694).

20470474 is a wasteful number, since it uses less digits than its factorization.

20470474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217820.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 20470474 is about 4524.4307929285. The cubic root of 20470474 is about 273.5537250175.

Adding to 20470474 its reverse (47407402), we get a palindrome (67877876).

The spelling of 20470474 in words is "twenty million, four hundred seventy thousand, four hundred seventy-four".