20769253 has 8 divisors (see below), whose sum is σ = 22134528. Its totient is φ = 19442544.

The previous prime is 20769251. The next prime is 20769271. The reversal of 20769253 is 35296702.

It is a happy number.

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

It is not a de Polignac number, because 20769253 - 2¹ = 20769251 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 (20769251) 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, 8526 + ... + 10687.

It is an arithmetic number, because the mean of its divisors is an integer number (2766816).

Almost surely, 2^20769253 is an apocalyptic number.

20769253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20769253 is a deficient number, since it is larger than the sum of its proper divisors (1365275).

20769253 is a wasteful number, since it uses less digits than its factorization.

20769253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19283.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 20769253 is about 4557.3295908898. The cubic root of 20769253 is about 274.8781961960.

The spelling of 20769253 in words is "twenty million, seven hundred sixty-nine thousand, two hundred fifty-three".