20416995 has 16 divisors (see below), whose sum is σ = 36297120. Its totient is φ = 10888992.

The previous prime is 20416987. The next prime is 20416999. The reversal of 20416995 is 59961402.

It is not a de Polignac number, because 20416995 - 2³ = 20416987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20416999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75484 + ... + 75753.

It is an arithmetic number, because the mean of its divisors is an integer number (2268570).

Almost surely, 2^20416995 is an apocalyptic number.

20416995 is a deficient number, since it is larger than the sum of its proper divisors (15880125).

20416995 is a wasteful number, since it uses less digits than its factorization.

20416995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151251 (or 151245 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 20416995 is about 4518.5169027016. The cubic root of 20416995 is about 273.3152980697.

The spelling of 20416995 in words is "twenty million, four hundred sixteen thousand, nine hundred ninety-five".