20735741 has 4 divisors (see below), whose sum is σ = 22330812. Its totient is φ = 19140672.

The previous prime is 20735731. The next prime is 20735747. The reversal of 20735741 is 14753702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14753702 = 2 ⋅7376851.

It can be written as a sum of positive squares in 2 ways, for example, as 1331716 + 19404025 = 1154^2 + 4405^2 .

It is a cyclic number.

It is not a de Polignac number, because 20735741 - 2⁶ = 20735677 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 (20735747) 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, 797516 + ... + 797541.

It is an arithmetic number, because the mean of its divisors is an integer number (5582703).

Almost surely, 2^20735741 is an apocalyptic number.

It is an amenable number.

20735741 is a deficient number, since it is larger than the sum of its proper divisors (1595071).

20735741 is a wasteful number, since it uses less digits than its factorization.

20735741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595070.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20735741 is about 4553.6513920150. The cubic root of 20735741 is about 274.7302743771.

The spelling of 20735741 in words is "twenty million, seven hundred thirty-five thousand, seven hundred forty-one".