20642030 has 16 divisors (see below), whose sum is σ = 37711440. Its totient is φ = 8133312.

The previous prime is 20642023. The next prime is 20642047. The reversal of 20642030 is 3024602.

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, 14735 + ... + 16074.

It is an arithmetic number, because the mean of its divisors is an integer number (2356965).

Almost surely, 2^20642030 is an apocalyptic number.

20642030 is a deficient number, since it is larger than the sum of its proper divisors (17069410).

20642030 is a wasteful number, since it uses less digits than its factorization.

20642030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30883.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20642030 is about 4543.3500855646. The cubic root of 20642030 is about 274.3157866592.

Adding to 20642030 its reverse (3024602), we get a palindrome (23666632).

The spelling of 20642030 in words is "twenty million, six hundred forty-two thousand, thirty".