216703488 has 160 divisors (see below), whose sum is σ = 628727616. Its totient is φ = 66060288.

The previous prime is 216703477. The next prime is 216703499. The reversal of 216703488 is 884307612.

It is an interprime number because it is at equal distance from previous prime (216703477) and next prime (216703499).

It is a super-2 number, since 2×216703488² = 93920803422732288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122720 + ... + 1122912.

Almost surely, 2^216703488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216703488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314363808).

216703488 is an abundant number, since it is smaller than the sum of its proper divisors (412024128).

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

216703488 is a wasteful number, since it uses less digits than its factorization.

216703488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 216703488 is about 14720.8521492473. The cubic root of 216703488 is about 600.6506718995.

The spelling of 216703488 in words is "two hundred sixteen million, seven hundred three thousand, four hundred eighty-eight".