20955902 has 8 divisors (see below), whose sum is σ = 34291512. Its totient is φ = 9525400.

The previous prime is 20955899. The next prime is 20955911.

20955902 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476249 + ... + 476292.

It is an arithmetic number, because the mean of its divisors is an integer number (4286439).

Almost surely, 2^20955902 is an apocalyptic number.

20955902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20955902 is a deficient number, since it is larger than the sum of its proper divisors (13335610).

20955902 is a wasteful number, since it uses less digits than its factorization.

20955902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952554.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 20955902 is about 4577.7616801227. The cubic root of 20955902 is about 275.6991663713.

It can be divided in two parts, 2095 and 5902, that added together give a palindrome (7997).

The spelling of 20955902 in words is "twenty million, nine hundred fifty-five thousand, nine hundred two".