20164533 has 8 divisors (see below), whose sum is σ = 28467648. Its totient is φ = 12652224.

The previous prime is 20164531. The next prime is 20164559. The reversal of 20164533 is 33546102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20164533 - 2¹ = 20164531 is a prime.

It is a super-2 number, since 2×20164533² = 813216782216178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197641 + ... + 197742.

It is an arithmetic number, because the mean of its divisors is an integer number (3558456).

Almost surely, 2^20164533 is an apocalyptic number.

It is an amenable number.

20164533 is a deficient number, since it is larger than the sum of its proper divisors (8303115).

20164533 is a wasteful number, since it uses less digits than its factorization.

20164533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395403.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20164533 is about 4490.4936254269. The cubic root of 20164533 is about 272.1840818856.

The spelling of 20164533 in words is "twenty million, one hundred sixty-four thousand, five hundred thirty-three".