216725460 has 96 divisors (see below), whose sum is σ = 708341760. Its totient is φ = 48478848.

The previous prime is 216725459. The next prime is 216725471. The reversal of 216725460 is 64527612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14251 + ... + 25229.

It is an arithmetic number, because the mean of its divisors is an integer number (7378560).

Almost surely, 2^216725460 is an apocalyptic number.

216725460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216725460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354170880).

216725460 is an abundant number, since it is smaller than the sum of its proper divisors (491616300).

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

216725460 is a wasteful number, since it uses less digits than its factorization.

216725460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045 (or 11043 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 216725460 is about 14721.5984186501. The cubic root of 216725460 is about 600.6709716044.

The spelling of 216725460 in words is "two hundred sixteen million, seven hundred twenty-five thousand, four hundred sixty".