20476136 has 8 divisors (see below), whose sum is σ = 38392770. Its totient is φ = 10238064.

The previous prime is 20476051. The next prime is 20476139. The reversal of 20476136 is 63167402.

It can be written as a sum of positive squares in only one way, i.e., 12602500 + 7873636 = 3550^2 + 2806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20476099 and 20476108.

It is not an unprimeable number, because it can be changed into a prime (20476139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279751 + ... + 1279766.

Almost surely, 2^20476136 is an apocalyptic number.

It is an amenable number.

20476136 is a deficient number, since it is larger than the sum of its proper divisors (17916634).

20476136 is a wasteful number, since it uses less digits than its factorization.

20476136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559523 (or 2559519 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20476136 is about 4525.0564637361. The cubic root of 20476136 is about 273.5789437531.

The spelling of 20476136 in words is "twenty million, four hundred seventy-six thousand, one hundred thirty-six".