20753469 has 16 divisors (see below), whose sum is σ = 33541440. Its totient is φ = 12577680.

The previous prime is 20753459. The next prime is 20753479. The reversal of 20753469 is 96435702.

It is an interprime number because it is at equal distance from previous prime (20753459) and next prime (20753479).

It is not a de Polignac number, because 20753469 - 2⁹ = 20752957 is a prime.

It is a super-2 number, since 2×20753469² = 861412951067922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20753419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34642 + ... + 35235.

It is an arithmetic number, because the mean of its divisors is an integer number (2096340).

Almost surely, 2^20753469 is an apocalyptic number.

It is an amenable number.

20753469 is a deficient number, since it is larger than the sum of its proper divisors (12787971).

20753469 is a wasteful number, since it uses less digits than its factorization.

20753469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69897 (or 69891 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 20753469 is about 4555.5975458769. The cubic root of 20753469 is about 274.8085455286.

The spelling of 20753469 in words is "twenty million, seven hundred fifty-three thousand, four hundred sixty-nine".