20434253 has 8 divisors (see below), whose sum is σ = 24582720. Its totient is φ = 16593120.

The previous prime is 20434247. The next prime is 20434259. The reversal of 20434253 is 35243402.

It is an interprime number because it is at equal distance from previous prime (20434247) and next prime (20434259).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20434253 - 2¹⁰ = 20433229 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 (20434259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76688 + ... + 76953.

It is an arithmetic number, because the mean of its divisors is an integer number (3072840).

Almost surely, 2^20434253 is an apocalyptic number.

It is an amenable number.

20434253 is a deficient number, since it is larger than the sum of its proper divisors (4148467).

20434253 is a wasteful number, since it uses less digits than its factorization.

20434253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153667.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 20434253 is about 4520.4261967208. The cubic root of 20434253 is about 273.3922853544.

Adding to 20434253 its reverse (35243402), we get a palindrome (55677655).

The spelling of 20434253 in words is "twenty million, four hundred thirty-four thousand, two hundred fifty-three".