20245413 has 8 divisors (see below), whose sum is σ = 27023776. Its totient is φ = 13482000.

The previous prime is 20245411. The next prime is 20245439. The reversal of 20245413 is 31454202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20245413 - 2¹ = 20245411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20245413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58 + ... + 6363.

It is an arithmetic number, because the mean of its divisors is an integer number (3377972).

Almost surely, 2^20245413 is an apocalyptic number.

It is an amenable number.

20245413 is a deficient number, since it is larger than the sum of its proper divisors (6778363).

20245413 is a wasteful number, since it uses less digits than its factorization.

20245413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20245413 is about 4499.4903044678. The cubic root of 20245413 is about 272.5475067974.

Adding to 20245413 its reverse (31454202), we get a palindrome (51699615).

The spelling of 20245413 in words is "twenty million, two hundred forty-five thousand, four hundred thirteen".