20373745 has 16 divisors (see below), whose sum is σ = 29157120. Its totient is φ = 13362624.

The previous prime is 20373739. The next prime is 20373767. The reversal of 20373745 is 54737302.

It is a cyclic number.

It is not a de Polignac number, because 20373745 - 2³ = 20373737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11850 + ... + 13459.

It is an arithmetic number, because the mean of its divisors is an integer number (1822320).

Almost surely, 2^20373745 is an apocalyptic number.

It is an amenable number.

20373745 is a deficient number, since it is larger than the sum of its proper divisors (8783375).

20373745 is a wasteful number, since it uses less digits than its factorization.

20373745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25344.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 20373745 is about 4513.7285031335. The cubic root of 20373745 is about 273.1221706720.

The spelling of 20373745 in words is "twenty million, three hundred seventy-three thousand, seven hundred forty-five".