216120528 has 160 divisors (see below), whose sum is σ = 691622400. Its totient is φ = 64157184.

The previous prime is 216120503. The next prime is 216120533. The reversal of 216120528 is 825021612.

It is a happy number.

216120528 is a `hidden beast` number, since 2 + 16 + 120 + 528 = 666.

216120528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 162201 + ... + 163527.

It is an arithmetic number, because the mean of its divisors is an integer number (4322640).

Almost surely, 2^216120528 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 216120528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345811200).

216120528 is an abundant number, since it is smaller than the sum of its proper divisors (475501872).

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

216120528 is a wasteful number, since it uses less digits than its factorization.

216120528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 216120528 is about 14701.0383306758. The cubic root of 216120528 is about 600.1115792488. Note that the first 3 decimals are identical.

The spelling of 216120528 in words is "two hundred sixteen million, one hundred twenty thousand, five hundred twenty-eight".