20576133 has 16 divisors (see below), whose sum is σ = 30553600. Its totient is φ = 13685760.

The previous prime is 20576131. The next prime is 20576141. The reversal of 20576133 is 33167502.

It is a happy number.

It is not a de Polignac number, because 20576133 - 2¹ = 20576131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20576097 and 20576106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20576131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20268 + ... + 21258.

It is an arithmetic number, because the mean of its divisors is an integer number (1909600).

Almost surely, 2^20576133 is an apocalyptic number.

It is an amenable number.

20576133 is a deficient number, since it is larger than the sum of its proper divisors (9977467).

20576133 is an equidigital number, since it uses as much as digits as its factorization.

20576133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 20576133 is about 4536.0922609665. The cubic root of 20576133 is about 274.0235696421.

The spelling of 20576133 in words is "twenty million, five hundred seventy-six thousand, one hundred thirty-three".