20415049 has 8 divisors (see below), whose sum is σ = 20662272. Its totient is φ = 20169600.

The previous prime is 20415041. The next prime is 20415071. The reversal of 20415049 is 94051402.

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

It is a cyclic number.

It is not a de Polignac number, because 20415049 - 2³ = 20415041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20415041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53112 + ... + 53494.

It is an arithmetic number, because the mean of its divisors is an integer number (2582784).

Almost surely, 2^20415049 is an apocalyptic number.

It is an amenable number.

20415049 is a deficient number, since it is larger than the sum of its proper divisors (247223).

20415049 is a wasteful number, since it uses less digits than its factorization.

20415049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20415049 is about 4518.3015614277. The cubic root of 20415049 is about 273.3066143160.

The spelling of 20415049 in words is "twenty million, four hundred fifteen thousand, forty-nine".