20898244 has 6 divisors (see below), whose sum is σ = 36571934. Its totient is φ = 10449120.

The previous prime is 20898223. The next prime is 20898257. The reversal of 20898244 is 44289802.

It can be written as a sum of positive squares in only one way, i.e., 16646400 + 4251844 = 4080^2 + 2062^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2612277 + ... + 2612284.

Almost surely, 2^20898244 is an apocalyptic number.

It is an amenable number.

20898244 is a deficient number, since it is larger than the sum of its proper divisors (15673690).

20898244 is a wasteful number, since it uses less digits than its factorization.

20898244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224565 (or 5224563 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 20898244 is about 4571.4597231081. The cubic root of 20898244 is about 275.4460815230.

The spelling of 20898244 in words is "twenty million, eight hundred ninety-eight thousand, two hundred forty-four".