20626541 has 8 divisors (see below), whose sum is σ = 22730400. Its totient is φ = 18596592.

The previous prime is 20626537. The next prime is 20626547. The reversal of 20626541 is 14562602.

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 20626541 - 2² = 20626537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20626541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626547) 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, 17891 + ... + 19008.

It is an arithmetic number, because the mean of its divisors is an integer number (2841300).

Almost surely, 2^20626541 is an apocalyptic number.

It is an amenable number.

20626541 is a deficient number, since it is larger than the sum of its proper divisors (2103859).

20626541 is a wasteful number, since it uses less digits than its factorization.

20626541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36955.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20626541 is about 4541.6451864935. The cubic root of 20626541 is about 274.2471574207.

The spelling of 20626541 in words is "twenty million, six hundred twenty-six thousand, five hundred forty-one".