20106429 has 32 divisors (see below), whose sum is σ = 31883520. Its totient is φ = 11031552.

The previous prime is 20106421. The next prime is 20106469. The reversal of 20106429 is 92460102.

It is not a de Polignac number, because 20106429 - 2³ = 20106421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20106399 and 20106408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87687 + ... + 87915.

It is an arithmetic number, because the mean of its divisors is an integer number (996360).

Almost surely, 2^20106429 is an apocalyptic number.

It is an amenable number.

20106429 is a deficient number, since it is larger than the sum of its proper divisors (11777091).

20106429 is a wasteful number, since it uses less digits than its factorization.

20106429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20106429 is about 4484.0192907703. The cubic root of 20106429 is about 271.9223980251.

The spelling of 20106429 in words is "twenty million, one hundred six thousand, four hundred twenty-nine".