20893601 has 8 divisors (see below), whose sum is σ = 21731880. Its totient is φ = 20063232.

The previous prime is 20893589. The next prime is 20893603. The reversal of 20893601 is 10639802.

It can be written as a sum of positive squares in 4 ways, for example, as 1752976 + 19140625 = 1324^2 + 4375^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20893601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20893603) 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, 3731 + ... + 7463.

It is an arithmetic number, because the mean of its divisors is an integer number (2716485).

Almost surely, 2^20893601 is an apocalyptic number.

It is an amenable number.

20893601 is a deficient number, since it is larger than the sum of its proper divisors (838279).

20893601 is a wasteful number, since it uses less digits than its factorization.

20893601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 20893601 is about 4570.9518702345. The cubic root of 20893601 is about 275.4256812304.

The spelling of 20893601 in words is "twenty million, eight hundred ninety-three thousand, six hundred one".