20071652 has 6 divisors (see below), whose sum is σ = 35125398. Its totient is φ = 10035824.

The previous prime is 20071651. The next prime is 20071687. The reversal of 20071652 is 25617002.

It can be written as a sum of positive squares in only one way, i.e., 14945956 + 5125696 = 3866^2 + 2264^2 .

It is not an unprimeable number, because it can be changed into a prime (20071651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2508953 + ... + 2508960.

It is an arithmetic number, because the mean of its divisors is an integer number (5854233).

Almost surely, 2^20071652 is an apocalyptic number.

It is an amenable number.

20071652 is a deficient number, since it is larger than the sum of its proper divisors (15053746).

20071652 is a wasteful number, since it uses less digits than its factorization.

20071652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017917 (or 5017915 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20071652 is about 4480.1397299638. The cubic root of 20071652 is about 271.7655310731.

Adding to 20071652 its reverse (25617002), we get a palindrome (45688654).

The spelling of 20071652 in words is "twenty million, seventy-one thousand, six hundred fifty-two".