215081016 has 16 divisors (see below), whose sum is σ = 537702600. Its totient is φ = 71693664.

The previous prime is 215081011. The next prime is 215081029. The reversal of 215081016 is 610180512.

It is a super-3 number, since 3×215081016³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8961709 = 215081016 / (2 + 1 + 5 + 0 + 8 + 1 + 0 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215081011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4480831 + ... + 4480878.

Almost surely, 2^215081016 is an apocalyptic number.

It is an amenable number.

215081016 is an abundant number, since it is smaller than the sum of its proper divisors (322621584).

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

215081016 is a wasteful number, since it uses less digits than its factorization.

215081016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8961718 (or 8961714 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 215081016 is about 14665.6406610826. The cubic root of 215081016 is about 599.1478792789.

The spelling of 215081016 in words is "two hundred fifteen million, eighty-one thousand, sixteen".