20733001 has 4 divisors (see below), whose sum is σ = 20753604. Its totient is φ = 20712400.

The previous prime is 20732983. The next prime is 20733029. The reversal of 20733001 is 10033702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9308601 + 11424400 = 3051^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 20733001 - 2¹⁵ = 20700233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20733701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8710 + ... + 10831.

It is an arithmetic number, because the mean of its divisors is an integer number (5188401).

Almost surely, 2^20733001 is an apocalyptic number.

It is an amenable number.

20733001 is a deficient number, since it is larger than the sum of its proper divisors (20603).

20733001 is a wasteful number, since it uses less digits than its factorization.

20733001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20602.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 20733001 is about 4553.3505246137. The cubic root of 20733001 is about 274.7181729831.

Adding to 20733001 its reverse (10033702), we get a palindrome (30766703).

The spelling of 20733001 in words is "twenty million, seven hundred thirty-three thousand, one".