20543202 has 12 divisors (see below), whose sum is σ = 44510310. Its totient is φ = 6847728.

The previous prime is 20543197. The next prime is 20543221. The reversal of 20543202 is 20234502.

It can be written as a sum of positive squares in only one way, i.e., 12809241 + 7733961 = 3579^2 + 2781^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1141289 = 20543202 / (2 + 0 + 5 + 4 + 3 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570627 + ... + 570662.

Almost surely, 2^20543202 is an apocalyptic number.

20543202 is an abundant number, since it is smaller than the sum of its proper divisors (23967108).

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

20543202 is a wasteful number, since it uses less digits than its factorization.

20543202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141297 (or 1141294 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20543202 is about 4532.4609209567. The cubic root of 20543202 is about 273.8773048972.

Adding to 20543202 its reverse (20234502), we get a palindrome (40777704).

The spelling of 20543202 in words is "twenty million, five hundred forty-three thousand, two hundred two".