20947050 has 36 divisors (see below), whose sum is σ = 56278950. Its totient is φ = 5585760.

The previous prime is 20947033. The next prime is 20947061. The reversal of 20947050 is 5074902.

It can be written as a sum of positive squares in 3 ways, for example, as 19900521 + 1046529 = 4461^2 + 1023^2 .

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 in 17 ways as a sum of consecutive naturals, for example, 22825 + ... + 23724.

Almost surely, 2^20947050 is an apocalyptic number.

20947050 is an abundant number, since it is smaller than the sum of its proper divisors (35331900).

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

20947050 is a wasteful number, since it uses less digits than its factorization.

20947050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46567 (or 46559 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20947050 is about 4576.7947299393. The cubic root of 20947050 is about 275.6603414660.

The spelling of 20947050 in words is "twenty million, nine hundred forty-seven thousand, fifty".