20503741 has 16 divisors (see below), whose sum is σ = 22348800. Its totient is φ = 18754560.

The previous prime is 20503709. The next prime is 20503753. The reversal of 20503741 is 14730502.

It is a cyclic number.

It is not a de Polignac number, because 20503741 - 2⁵ = 20503709 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 (20503771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106141 + ... + 106333.

It is an arithmetic number, because the mean of its divisors is an integer number (1396800).

Almost surely, 2^20503741 is an apocalyptic number.

It is an amenable number.

20503741 is a deficient number, since it is larger than the sum of its proper divisors (1845059).

20503741 is a wasteful number, since it uses less digits than its factorization.

20503741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20503741 is about 4528.1056745619. The cubic root of 20503741 is about 273.7018307968.

The spelling of 20503741 in words is "twenty million, five hundred three thousand, seven hundred forty-one".