20430474 has 8 divisors (see below), whose sum is σ = 40860960. Its totient is φ = 6810156.

The previous prime is 20430469. The next prime is 20430499. The reversal of 20430474 is 47403402.

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

20430474 is an admirable number.

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, 1702534 + ... + 1702545.

It is an arithmetic number, because the mean of its divisors is an integer number (5107620).

Almost surely, 2^20430474 is an apocalyptic number.

20430474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20430474 is a wasteful number, since it uses less digits than its factorization.

20430474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405084.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20430474 is about 4520.0081858333. The cubic root of 20430474 is about 273.3754310862.

Adding to 20430474 its reverse (47403402), we get a palindrome (67833876).

The spelling of 20430474 in words is "twenty million, four hundred thirty thousand, four hundred seventy-four".