20433441 has 24 divisors (see below), whose sum is σ = 31883520. Its totient is φ = 11606112.

The previous prime is 20433437. The next prime is 20433443. The reversal of 20433441 is 14433402.

It is not a de Polignac number, because 20433441 - 2² = 20433437 is a prime.

It is a super-2 number, since 2×20433441² = 835051022200962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20433443) 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, 33360 + ... + 33966.

It is an arithmetic number, because the mean of its divisors is an integer number (1328480).

Almost surely, 2^20433441 is an apocalyptic number.

20433441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20433441 is a deficient number, since it is larger than the sum of its proper divisors (11450079).

20433441 is a wasteful number, since it uses less digits than its factorization.

20433441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20433441 is about 4520.3363812885. The cubic root of 20433441 is about 273.3886640251.

Adding to 20433441 its reverse (14433402), we get a palindrome (34866843).

The spelling of 20433441 in words is "twenty million, four hundred thirty-three thousand, four hundred forty-one".