20492469 has 12 divisors (see below), whose sum is σ = 31158400. Its totient is φ = 12942504.

The previous prime is 20492447. The next prime is 20492477. The reversal of 20492469 is 96429402.

It is not a de Polignac number, because 20492469 - 2⁹ = 20491957 is a prime.

It is a super-2 number, since 2×20492469² = 839882571431922, 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 (20492489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59749 + ... + 60090.

Almost surely, 2^20492469 is an apocalyptic number.

It is an amenable number.

20492469 is a deficient number, since it is larger than the sum of its proper divisors (10665931).

20492469 is a wasteful number, since it uses less digits than its factorization.

20492469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119864 (or 119861 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20492469 is about 4526.8608328510. The cubic root of 20492469 is about 273.6516654380.

The spelling of 20492469 in words is "twenty million, four hundred ninety-two thousand, four hundred sixty-nine".