20475036 has 18 divisors (see below), whose sum is σ = 51756432. Its totient is φ = 6825000.

The previous prime is 20475019. The next prime is 20475041. The reversal of 20475036 is 63057402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284340 + ... + 284411.

Almost surely, 2^20475036 is an apocalyptic number.

It is an amenable number.

20475036 is an abundant number, since it is smaller than the sum of its proper divisors (31281396).

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

20475036 is a wasteful number, since it uses less digits than its factorization.

20475036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568761 (or 568756 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20475036 is about 4524.9349166590. The cubic root of 20475036 is about 273.5740446805.

The spelling of 20475036 in words is "twenty million, four hundred seventy-five thousand, thirty-six".