216245460 has 192 divisors, whose sum is σ = 683827200. Its totient is φ = 50803200.

The previous prime is 216245437. The next prime is 216245467. The reversal of 216245460 is 64542612.

216245460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216245460² = 93524197941223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216245467) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1024755 + ... + 1024965.

It is an arithmetic number, because the mean of its divisors is an integer number (3561600).

Almost surely, 2^216245460 is an apocalyptic number.

216245460 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 216245460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341913600).

216245460 is an abundant number, since it is smaller than the sum of its proper divisors (467581740).

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

216245460 is a wasteful number, since it uses less digits than its factorization.

216245460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 216245460 is about 14705.2868044115. The cubic root of 216245460 is about 600.2271917401.

The spelling of 216245460 in words is "two hundred sixteen million, two hundred forty-five thousand, four hundred sixty".