20629413 has 36 divisors (see below), whose sum is σ = 35657440. Its totient is φ = 11257488.

The previous prime is 20629391. The next prime is 20629417. The reversal of 20629413 is 31492602.

20629413 is a `hidden beast` number, since 20 + 629 + 4 + 13 = 666.

It is not a de Polignac number, because 20629413 - 2⁸ = 20629157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20629417) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33018 + ... + 33636.

Almost surely, 2^20629413 is an apocalyptic number.

20629413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20629413 is a deficient number, since it is larger than the sum of its proper divisors (15028027).

20629413 is a wasteful number, since it uses less digits than its factorization.

20629413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20629413 is about 4541.9613604697. The cubic root of 20629413 is about 274.2598853794.

The spelling of 20629413 in words is "twenty million, six hundred twenty-nine thousand, four hundred thirteen".