20942248 has 16 divisors (see below), whose sum is σ = 39532500. Its totient is φ = 10400256.

The previous prime is 20942239. The next prime is 20942287. The reversal of 20942248 is 84224902.

It can be written as a sum of positive squares in 2 ways, for example, as 15382084 + 5560164 = 3922^2 + 2358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7593 + ... + 9976.

Almost surely, 2^20942248 is an apocalyptic number.

It is an amenable number.

20942248 is a deficient number, since it is larger than the sum of its proper divisors (18590252).

20942248 is a wasteful number, since it uses less digits than its factorization.

20942248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724 (or 17720 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20942248 is about 4576.2700969239. The cubic root of 20942248 is about 275.6392752996.

The spelling of 20942248 in words is "twenty million, nine hundred forty-two thousand, two hundred forty-eight".