20350623 has 8 divisors (see below), whose sum is σ = 27162928. Its totient is φ = 13552704.

The previous prime is 20350621. The next prime is 20350639. The reversal of 20350623 is 32605302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20350623 - 2¹ = 20350621 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 20350623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350621) 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, 315 + ... + 6387.

It is an arithmetic number, because the mean of its divisors is an integer number (3395366).

Almost surely, 2^20350623 is an apocalyptic number.

20350623 is a deficient number, since it is larger than the sum of its proper divisors (6812305).

20350623 is a wasteful number, since it uses less digits than its factorization.

20350623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20350623 is about 4511.1664788611. The cubic root of 20350623 is about 273.0188101733.

Adding to 20350623 its reverse (32605302), we get a palindrome (52955925).

The spelling of 20350623 in words is "twenty million, three hundred fifty thousand, six hundred twenty-three".