20493701 has 4 divisors (see below), whose sum is σ = 20531052. Its totient is φ = 20456352.

The previous prime is 20493679. The next prime is 20493719. The reversal of 20493701 is 10739402.

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 1562500 + 18931201 = 1250^2 + 4351^2 .

It is a cyclic number.

It is not a de Polignac number, because 20493701 - 2⁶ = 20493637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20493731) 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, 17840 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (5132763).

Almost surely, 2^20493701 is an apocalyptic number.

It is an amenable number.

20493701 is a deficient number, since it is larger than the sum of its proper divisors (37351).

20493701 is an equidigital number, since it uses as much as digits as its factorization.

20493701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37350.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20493701 is about 4526.9969074432. The cubic root of 20493701 is about 273.6571492753.

The spelling of 20493701 in words is "twenty million, four hundred ninety-three thousand, seven hundred one".