215010612 has 120 divisors (see below), whose sum is σ = 603741600. Its totient is φ = 66515904.

The previous prime is 215010599. The next prime is 215010613. The reversal of 215010612 is 216010512.

215010612 is a `hidden beast` number, since 2 + 1 + 50 + 1 + 0 + 612 = 666.

It is a super-2 number, since 2×215010612² = 92459126545229088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215010613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 325939 + ... + 326597.

It is an arithmetic number, because the mean of its divisors is an integer number (5031180).

Almost surely, 2^215010612 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 215010612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301870800).

215010612 is an abundant number, since it is smaller than the sum of its proper divisors (388730988).

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

215010612 is a wasteful number, since it uses less digits than its factorization.

215010612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 215010612 is about 14663.2401603466. The cubic root of 215010612 is about 599.0824976977.

The spelling of 215010612 in words is "two hundred fifteen million, ten thousand, six hundred twelve".