20413045 has 4 divisors (see below), whose sum is σ = 24495660. Its totient is φ = 16330432.

The previous prime is 20413033. The next prime is 20413051. The reversal of 20413045 is 54031402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15944049 + 4468996 = 3993^2 + 2114^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413045 - 2¹⁷ = 20281973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041300 + ... + 2041309.

It is an arithmetic number, because the mean of its divisors is an integer number (6123915).

Almost surely, 2^20413045 is an apocalyptic number.

It is an amenable number.

20413045 is a deficient number, since it is larger than the sum of its proper divisors (4082615).

20413045 is an equidigital number, since it uses as much as digits as its factorization.

20413045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082614.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20413045 is about 4518.0797912388. The cubic root of 20413045 is about 273.2976711686.

Adding to 20413045 its reverse (54031402), we get a palindrome (74444447).

The spelling of 20413045 in words is "twenty million, four hundred thirteen thousand, forty-five".