20412403 has 16 divisors (see below), whose sum is σ = 23696640. Its totient is φ = 17388000.

The previous prime is 20412397. The next prime is 20412409. The reversal of 20412403 is 30421402.

It is an interprime number because it is at equal distance from previous prime (20412397) and next prime (20412409).

It is a cyclic number.

It is not a de Polignac number, because 20412403 - 2²¹ = 18315251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20412409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20626 + ... + 21592.

It is an arithmetic number, because the mean of its divisors is an integer number (1481040).

Almost surely, 2^20412403 is an apocalyptic number.

20412403 is a deficient number, since it is larger than the sum of its proper divisors (3284237).

20412403 is a wasteful number, since it uses less digits than its factorization.

20412403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20412403 is about 4518.0087427981. The cubic root of 20412403 is about 273.2948060245.

Adding to 20412403 its reverse (30421402), we get a palindrome (50833805).

It can be divided in two parts, 2041 and 2403, that added together give a palindrome (4444).

The spelling of 20412403 in words is "twenty million, four hundred twelve thousand, four hundred three".