20629477 has 8 divisors (see below), whose sum is σ = 23231232. Its totient is φ = 18148800.

The previous prime is 20629471. The next prime is 20629489. The reversal of 20629477 is 77492602.

It is a happy number.

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 20629477 - 2¹¹ = 20627429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20629471) 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, 29908 + ... + 30589.

It is an arithmetic number, because the mean of its divisors is an integer number (2903904).

Almost surely, 2^20629477 is an apocalyptic number.

It is an amenable number.

20629477 is a deficient number, since it is larger than the sum of its proper divisors (2601755).

20629477 is a wasteful number, since it uses less digits than its factorization.

20629477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60539.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 20629477 is about 4541.9684058787. The cubic root of 20629477 is about 274.2601689973.

The spelling of 20629477 in words is "twenty million, six hundred twenty-nine thousand, four hundred seventy-seven".