20256373 has 4 divisors (see below), whose sum is σ = 20416000. Its totient is φ = 20096748.

The previous prime is 20256359. The next prime is 20256377. The reversal of 20256373 is 37365202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20256373 - 2¹³ = 20248181 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 (20256377) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 79623 + ... + 79876.

It is an arithmetic number, because the mean of its divisors is an integer number (5104000).

Almost surely, 2^20256373 is an apocalyptic number.

It is an amenable number.

20256373 is a deficient number, since it is larger than the sum of its proper divisors (159627).

20256373 is a wasteful number, since it uses less digits than its factorization.

20256373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159626.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20256373 is about 4500.7080554064. The cubic root of 20256373 is about 272.5966797764.

The spelling of 20256373 in words is "twenty million, two hundred fifty-six thousand, three hundred seventy-three".