20199415 has 8 divisors (see below), whose sum is σ = 24341328. Its totient is φ = 16091520.

The previous prime is 20199409. The next prime is 20199427. The reversal of 20199415 is 51499102.

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

It is not a de Polignac number, because 20199415 - 2⁹ = 20198903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7177 + ... + 9586.

It is an arithmetic number, because the mean of its divisors is an integer number (3042666).

Almost surely, 2^20199415 is an apocalyptic number.

20199415 is a deficient number, since it is larger than the sum of its proper divisors (4141913).

20199415 is a wasteful number, since it uses less digits than its factorization.

20199415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17009.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 20199415 is about 4494.3759299818. The cubic root of 20199415 is about 272.3409390723.

The spelling of 20199415 in words is "twenty million, one hundred ninety-nine thousand, four hundred fifteen".