20481417 has 40 divisors (see below), whose sum is σ = 33825792. Its totient is φ = 12247200.

The previous prime is 20481403. The next prime is 20481451. The reversal of 20481417 is 71418402.

It is not a de Polignac number, because 20481417 - 2⁴ = 20481401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20481467) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 113067 + ... + 113247.

Almost surely, 2^20481417 is an apocalyptic number.

20481417 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20481417 is a deficient number, since it is larger than the sum of its proper divisors (13344375).

20481417 is a wasteful number, since it uses less digits than its factorization.

20481417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 20481417 is about 4525.6399547467. The cubic root of 20481417 is about 273.6024613121.

Adding to 20481417 its reverse (71418402), we get a palindrome (91899819).

The spelling of 20481417 in words is "twenty million, four hundred eighty-one thousand, four hundred seventeen".