20061629 has 12 divisors (see below), whose sum is σ = 23418108. Its totient is φ = 17136000.

The previous prime is 20061623. The next prime is 20061653. The reversal of 20061629 is 92616002.

It can be written as a sum of positive squares in 2 ways, for example, as 16999129 + 3062500 = 4123^2 + 1750^2 .

It is not a de Polignac number, because 20061629 - 2¹² = 20057533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20061598 and 20061607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061623) 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, 19139 + ... + 20159.

It is an arithmetic number, because the mean of its divisors is an integer number (1951509).

Almost surely, 2^20061629 is an apocalyptic number.

It is an amenable number.

20061629 is a deficient number, since it is larger than the sum of its proper divisors (3356479).

20061629 is a wasteful number, since it uses less digits than its factorization.

20061629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20061629 is about 4479.0209867782. The cubic root of 20061629 is about 271.7202871731.

The spelling of 20061629 in words is "twenty million, sixty-one thousand, six hundred twenty-nine".