215612672 has 72 divisors (see below), whose sum is σ = 490069440. Its totient is φ = 93716480.

The previous prime is 215612659. The next prime is 215612687. The reversal of 215612672 is 276216512.

215612672 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 (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63104 + ... + 66432.

It is an arithmetic number, because the mean of its divisors is an integer number (6806520).

Almost surely, 2^215612672 is an apocalyptic number.

215612672 is a gapful number since it is divisible by the number (22) 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 215612672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245034720).

215612672 is an abundant number, since it is smaller than the sum of its proper divisors (274456768).

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

215612672 is a wasteful number, since it uses less digits than its factorization.

215612672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3365 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 215612672 is about 14683.7553779679. The cubic root of 215612672 is about 599.6411483816.

The spelling of 215612672 in words is "two hundred fifteen million, six hundred twelve thousand, six hundred seventy-two".