216526412 has 48 divisors (see below), whose sum is σ = 409600800. Its totient is φ = 99939840.

The previous prime is 216526403. The next prime is 216526417. The reversal of 216526412 is 214625612.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (216526417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251639 + ... + 252497.

It is an arithmetic number, because the mean of its divisors is an integer number (8533350).

Almost surely, 2^216526412 is an apocalyptic number.

It is an amenable number.

216526412 is a deficient number, since it is larger than the sum of its proper divisors (193074388).

216526412 is a wasteful number, since it uses less digits than its factorization.

216526412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 216526412 is about 14714.8364584864. The cubic root of 216526412 is about 600.4870230924.

The spelling of 216526412 in words is "two hundred sixteen million, five hundred twenty-six thousand, four hundred twelve".