216258432 has 64 divisors (see below), whose sum is σ = 618638160. Its totient is φ = 66539520.

The previous prime is 216258407. The next prime is 216258439. The reversal of 216258432 is 234852612.

216258432 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 (64).

It is a super-2 number, since 2×216258432² = 93535418822197248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216258393 and 216258402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216258439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16669 + ... + 26652.

Almost surely, 2^216258432 is an apocalyptic number.

It is an amenable number.

216258432 is an abundant number, since it is smaller than the sum of its proper divisors (402379728).

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

216258432 is a wasteful number, since it uses less digits than its factorization.

216258432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43351 (or 43339 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 216258432 is about 14705.7278636591. The cubic root of 216258432 is about 600.2391935203.

The spelling of 216258432 in words is "two hundred sixteen million, two hundred fifty-eight thousand, four hundred thirty-two".