20212469 has 8 divisors (see below), whose sum is σ = 21185280. Its totient is φ = 19247536.

The previous prime is 20212463. The next prime is 20212477. The reversal of 20212469 is 96421202.

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 20212469 - 2⁴ = 20212453 is a prime.

It is a super-2 number, since 2×20212469² = 817087806151922, 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 (20212463) 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, 3659 + ... + 7335.

It is an arithmetic number, because the mean of its divisors is an integer number (2648160).

Almost surely, 2^20212469 is an apocalyptic number.

It is an amenable number.

20212469 is a deficient number, since it is larger than the sum of its proper divisors (972811).

20212469 is a wasteful number, since it uses less digits than its factorization.

20212469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20212469 is about 4495.8279548933. The cubic root of 20212469 is about 272.3995937916.

The spelling of 20212469 in words is "twenty million, two hundred twelve thousand, four hundred sixty-nine".