20006470 has 32 divisors (see below), whose sum is σ = 40559616. Its totient is φ = 7039200.

The previous prime is 20006431. The next prime is 20006489. The reversal of 20006470 is 7460002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477 + ... + 6343.

It is an arithmetic number, because the mean of its divisors is an integer number (1267488).

Almost surely, 2^20006470 is an apocalyptic number.

20006470 is an abundant number, since it is smaller than the sum of its proper divisors (20553146).

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

20006470 is a wasteful number, since it uses less digits than its factorization.

20006470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20006470 is about 4472.8592644974. The cubic root of 20006470 is about 271.4710289737.

Adding to 20006470 its reverse (7460002), we get a palindrome (27466472).

The spelling of 20006470 in words is "twenty million, six thousand, four hundred seventy".