20415914 has 4 divisors (see below), whose sum is σ = 30623874. Its totient is φ = 10207956.

The previous prime is 20415911. The next prime is 20415919. The reversal of 20415914 is 41951402.

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

It can be written as a sum of positive squares in only one way, i.e., 14250625 + 6165289 = 3775^2 + 2483^2 .

It is not an unprimeable number, because it can be changed into a prime (20415911) 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 as a sum of consecutive naturals, namely, 5103977 + ... + 5103980.

Almost surely, 2^20415914 is an apocalyptic number.

20415914 is a deficient number, since it is larger than the sum of its proper divisors (10207960).

20415914 is a wasteful number, since it uses less digits than its factorization.

20415914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207959.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 20415914 is about 4518.3972822230. The cubic root of 20415914 is about 273.3104743260.

The spelling of 20415914 in words is "twenty million, four hundred fifteen thousand, nine hundred fourteen".