215000964 has 72 divisors (see below), whose sum is σ = 572836992. Its totient is φ = 67858560.

The previous prime is 215000927. The next prime is 215001013. The reversal of 215000964 is 469000512.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84024 + ... + 86544.

Almost surely, 2^215000964 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 215000964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286418496).

215000964 is an abundant number, since it is smaller than the sum of its proper divisors (357836028).

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

215000964 is a wasteful number, since it uses less digits than its factorization.

With its successor (215000965) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (2652).

215000964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657 (or 2652 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 215000964 is about 14662.9111707055. The cubic root of 215000964 is about 599.0735368464.

The spelling of 215000964 in words is "two hundred fifteen million, nine hundred sixty-four", and thus it is an aban number.