20359469 has 16 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 17646336.

The previous prime is 20359457. The next prime is 20359477. The reversal of 20359469 is 96495302.

It is a cyclic number.

It is not a de Polignac number, because 20359469 - 2¹² = 20355373 is a prime.

It is a super-2 number, since 2×20359469² = 829015955923922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352469) 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, 34037 + ... + 34629.

It is an arithmetic number, because the mean of its divisors is an integer number (1455300).

Almost surely, 2^20359469 is an apocalyptic number.

It is an amenable number.

20359469 is a deficient number, since it is larger than the sum of its proper divisors (2925331).

20359469 is a wasteful number, since it uses less digits than its factorization.

20359469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20359469 is about 4512.1468282847. The cubic root of 20359469 is about 273.0583630090.

The spelling of 20359469 in words is "twenty million, three hundred fifty-nine thousand, four hundred sixty-nine".