20944902 has 64 divisors (see below), whose sum is σ = 48936960. Its totient is φ = 5913600.

The previous prime is 20944883. The next prime is 20944907.

20944902 is nontrivially palindromic in base 10 and base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 20944902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20944907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59158 + ... + 59510.

It is an arithmetic number, because the mean of its divisors is an integer number (764640).

Almost surely, 2^20944902 is an apocalyptic number.

20944902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20944902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24468480).

20944902 is an abundant number, since it is smaller than the sum of its proper divisors (27992058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20944902 is a wasteful number, since it uses less digits than its factorization.

20944902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20944902 is about 4576.5600618805. The cubic root of 20944902 is about 275.6509186809.

It can be divided in two parts, 2094 and 4902, that added together give a palindrome (6996).

The spelling of 20944902 in words is "twenty million, nine hundred forty-four thousand, nine hundred two".