20475016 has 16 divisors (see below), whose sum is σ = 39020940. Its totient is φ = 10069440.

The previous prime is 20475001. The next prime is 20475019. The reversal of 20475016 is 61057402.

It can be written as a sum of positive squares in 2 ways, for example, as 18922500 + 1552516 = 4350^2 + 1246^2 .

It is not an unprimeable number, because it can be changed into a prime (20475019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20491 + ... + 21466.

Almost surely, 2^20475016 is an apocalyptic number.

It is an amenable number.

20475016 is a deficient number, since it is larger than the sum of its proper divisors (18545924).

20475016 is a wasteful number, since it uses less digits than its factorization.

20475016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42024 (or 42020 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20475016 is about 4524.9327066819. The cubic root of 20475016 is about 273.5739556048.

The spelling of 20475016 in words is "twenty million, four hundred seventy-five thousand, sixteen".