20137415 has 8 divisors (see below), whose sum is σ = 24496368. Its totient is φ = 15888960.

The previous prime is 20137409. The next prime is 20137417. The reversal of 20137415 is 51473102.

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

It is not a de Polignac number, because 20137415 - 2⁴ = 20137399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20137417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27221 + ... + 27950.

It is an arithmetic number, because the mean of its divisors is an integer number (3062046).

Almost surely, 2^20137415 is an apocalyptic number.

20137415 is a deficient number, since it is larger than the sum of its proper divisors (4358953).

20137415 is an equidigital number, since it uses as much as digits as its factorization.

20137415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55249.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20137415 is about 4487.4731196967. The cubic root of 20137415 is about 272.0620127855.

The spelling of 20137415 in words is "twenty million, one hundred thirty-seven thousand, four hundred fifteen".