20331470 has 16 divisors (see below), whose sum is σ = 36656928. Its totient is φ = 8119200.

The previous prime is 20331469. The next prime is 20331481. The reversal of 20331470 is 7413302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6695 + ... + 9245.

It is an arithmetic number, because the mean of its divisors is an integer number (2291058).

Almost surely, 2^20331470 is an apocalyptic number.

20331470 is a deficient number, since it is larger than the sum of its proper divisors (16325458).

20331470 is a wasteful number, since it uses less digits than its factorization.

20331470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20331470 is about 4509.0431357440. The cubic root of 20331470 is about 272.9331326882.

Adding to 20331470 its reverse (7413302), we get a palindrome (27744772).

The spelling of 20331470 in words is "twenty million, three hundred thirty-one thousand, four hundred seventy".