20673135 has 24 divisors (see below), whose sum is σ = 40953120. Its totient is φ = 9450432.

The previous prime is 20673131. The next prime is 20673137. The reversal of 20673135 is 53137602.

It is a happy number.

It is not a de Polignac number, because 20673135 - 2² = 20673131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20673099 and 20673108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32500 + ... + 33129.

It is an arithmetic number, because the mean of its divisors is an integer number (1706380).

Almost surely, 2^20673135 is an apocalyptic number.

20673135 is a deficient number, since it is larger than the sum of its proper divisors (20279985).

20673135 is a wasteful number, since it uses less digits than its factorization.

20673135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65647 (or 65644 counting only the distinct ones).

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

The square root of 20673135 is about 4546.7719318215. The cubic root of 20673135 is about 274.4535042233.

The spelling of 20673135 in words is "twenty million, six hundred seventy-three thousand, one hundred thirty-five".