20245473 has 12 divisors (see below), whose sum is σ = 29723668. Its totient is φ = 13275360.

The previous prime is 20245471. The next prime is 20245483. The reversal of 20245473 is 37454202.

20245473 is a `hidden beast` number, since 202 + 454 + 7 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8363664 + 11881809 = 2892^2 + 3447^2 .

It is not a de Polignac number, because 20245473 - 2¹ = 20245471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20245471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17890 + ... + 18987.

Almost surely, 2^20245473 is an apocalyptic number.

It is an amenable number.

20245473 is a deficient number, since it is larger than the sum of its proper divisors (9478195).

20245473 is a wasteful number, since it uses less digits than its factorization.

20245473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36944 (or 36941 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 20245473 is about 4499.4969718847. The cubic root of 20245473 is about 272.5477760409.

Adding to 20245473 its reverse (37454202), we get a palindrome (57699675).

The spelling of 20245473 in words is "twenty million, two hundred forty-five thousand, four hundred seventy-three".