215407116 has 18 divisors (see below), whose sum is σ = 544501412. Its totient is φ = 71802360.

The previous prime is 215407109. The next prime is 215407117. The reversal of 215407116 is 611704512.

It is a happy number.

215407116 is a `hidden beast` number, since 2 + 1 + 540 + 7 + 116 = 666.

215407116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 215407116.

It is not an unprimeable number, because it can be changed into a prime (215407117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2991730 + ... + 2991801.

Almost surely, 2^215407116 is an apocalyptic number.

It is an amenable number.

215407116 is an abundant number, since it is smaller than the sum of its proper divisors (329094296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215407116 is a wasteful number, since it uses less digits than its factorization.

215407116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983541 (or 5983536 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 215407116 is about 14676.7542733399. The cubic root of 215407116 is about 599.4505302920.

The spelling of 215407116 in words is "two hundred fifteen million, four hundred seven thousand, one hundred sixteen".