20958106 has 32 divisors (see below), whose sum is σ = 35779968. Its totient is φ = 9134400.

The previous prime is 20958101. The next prime is 20958107. The reversal of 20958106 is 60185902.

It is not an unprimeable number, because it can be changed into a prime (20958101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60225 + ... + 60571.

It is an arithmetic number, because the mean of its divisors is an integer number (1118124).

Almost surely, 2^20958106 is an apocalyptic number.

20958106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20958106 is a deficient number, since it is larger than the sum of its proper divisors (14821862).

20958106 is a wasteful number, since it uses less digits than its factorization.

20958106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 20958106 is about 4578.0024027954. The cubic root of 20958106 is about 275.7088314235.

It can be divided in two parts, 2095 and 8106, that added together give a palindrome (10201).

The spelling of 20958106 in words is "twenty million, nine hundred fifty-eight thousand, one hundred six".