216407436 has 24 divisors (see below), whose sum is σ = 577086720. Its totient is φ = 61830672.

The previous prime is 216407423. The next prime is 216407447. The reversal of 216407436 is 634704612.

It is a happy number.

216407436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216407397 and 216407406.

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, 1288056 + ... + 1288223.

It is an arithmetic number, because the mean of its divisors is an integer number (24045280).

Almost surely, 2^216407436 is an apocalyptic number.

It is an amenable number.

216407436 is an abundant number, since it is smaller than the sum of its proper divisors (360679284).

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

216407436 is a wasteful number, since it uses less digits than its factorization.

216407436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576293 (or 2576291 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 216407436 is about 14710.7931805189. The cubic root of 216407436 is about 600.3770186009.

The spelling of 216407436 in words is "two hundred sixteen million, four hundred seven thousand, four hundred thirty-six".