20433402 has 48 divisors (see below), whose sum is σ = 49870080. Its totient is φ = 5990400.

The previous prime is 20433397. The next prime is 20433403.

20433402 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (20433403) 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, 4474 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (1038960).

Almost surely, 2^20433402 is an apocalyptic number.

20433402 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 20433402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24935040).

20433402 is an abundant number, since it is smaller than the sum of its proper divisors (29436678).

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

20433402 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 20433402 = (42403320)₉.

20433402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3376 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20433402 is about 4520.3320674481. The cubic root of 20433402 is about 273.3884900918.

It can be divided in two parts, 2043 and 3402, that added together give a palindrome (5445).

The spelling of 20433402 in words is "twenty million, four hundred thirty-three thousand, four hundred two".