216415023 has 32 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 125328000.

The previous prime is 216415019. The next prime is 216415037. The reversal of 216415023 is 320514612.

It is not a de Polignac number, because 216415023 - 2² = 216415019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216414984 and 216415002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216415223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95538 + ... + 97776.

It is an arithmetic number, because the mean of its divisors is an integer number (10281600).

Almost surely, 2^216415023 is an apocalyptic number.

216415023 is a deficient number, since it is larger than the sum of its proper divisors (112596177).

216415023 is a wasteful number, since it uses less digits than its factorization.

216415023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 216415023 is about 14711.0510501459. The cubic root of 216415023 is about 600.3840346987.

Adding to 216415023 its reverse (320514612), we get a palindrome (536929635).

The spelling of 216415023 in words is "two hundred sixteen million, four hundred fifteen thousand, twenty-three".