20302254 has 48 divisors (see below), whose sum is σ = 51143040. Its totient is φ = 5700240.

The previous prime is 20302223. The next prime is 20302259. The reversal of 20302254 is 45220302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6069 + ... + 8799.

It is an arithmetic number, because the mean of its divisors is an integer number (1065480).

Almost surely, 2^20302254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20302254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25571520).

20302254 is an abundant number, since it is smaller than the sum of its proper divisors (30840786).

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

20302254 is a wasteful number, since it uses less digits than its factorization.

20302254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20302254 is about 4505.8022593097. The cubic root of 20302254 is about 272.8023364895.

Adding to 20302254 its reverse (45220302), we get a palindrome (65522556).

The spelling of 20302254 in words is "twenty million, three hundred two thousand, two hundred fifty-four".