20452797 has 16 divisors (see below), whose sum is σ = 31896000. Its totient is φ = 12917232.

The previous prime is 20452781. The next prime is 20452811. The reversal of 20452797 is 79725402.

It is not a de Polignac number, because 20452797 - 2⁴ = 20452781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452297) 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 15 ways as a sum of consecutive naturals, for example, 19422 + ... + 20447.

It is an arithmetic number, because the mean of its divisors is an integer number (1993500).

Almost surely, 2^20452797 is an apocalyptic number.

20452797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20452797 is a deficient number, since it is larger than the sum of its proper divisors (11443203).

20452797 is a wasteful number, since it uses less digits than its factorization.

20452797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39897 (or 39891 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 20452797 is about 4522.4768656125. The cubic root of 20452797 is about 273.4749611391.

The spelling of 20452797 in words is "twenty million, four hundred fifty-two thousand, seven hundred ninety-seven".