20012629 has 24 divisors (see below), whose sum is σ = 25424280. Its totient is φ = 15611904.

The previous prime is 20012609. The next prime is 20012683. The reversal of 20012629 is 92621002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4900 + 20007729 = 70^2 + 4473^2 .

It is not a de Polignac number, because 20012629 - 2¹⁷ = 19881557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56517 + ... + 56869.

It is an arithmetic number, because the mean of its divisors is an integer number (1059345).

Almost surely, 2^20012629 is an apocalyptic number.

It is an amenable number.

20012629 is a deficient number, since it is larger than the sum of its proper divisors (5411651).

20012629 is a wasteful number, since it uses less digits than its factorization.

20012629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20012629 is about 4473.5476972980. The cubic root of 20012629 is about 271.4988836048.

The spelling of 20012629 in words is "twenty million, twelve thousand, six hundred twenty-nine".