215020512 has 72 divisors (see below), whose sum is σ = 698823216. Its totient is φ = 61433856.

The previous prime is 215020499. The next prime is 215020513.

215020512 is a `hidden beast` number, since 2 + 150 + 2 + 0 + 512 = 666.

215020512 is nontrivially palindromic in base 10.

215020512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

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 (215020513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51313 + ... + 55344.

It is an arithmetic number, because the mean of its divisors is an integer number (9705878).

Almost surely, 2^215020512 is an apocalyptic number.

It is an amenable number.

215020512 is an abundant number, since it is smaller than the sum of its proper divisors (483802704).

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

215020512 is a wasteful number, since it uses less digits than its factorization.

215020512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106680 (or 106669 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 215020512 is about 14663.5777353278. The cubic root of 215020512 is about 599.0916923225.

The spelling of 215020512 in words is "two hundred fifteen million, twenty thousand, five hundred twelve".