215375960 has 64 divisors (see below), whose sum is σ = 496108800. Its totient is φ = 84125056.

The previous prime is 215375959. The next prime is 215375969. The reversal of 215375960 is 69573512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215375969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620507 + ... + 620853.

It is an arithmetic number, because the mean of its divisors is an integer number (7751700).

Almost surely, 2^215375960 is an apocalyptic number.

215375960 is a gapful number since it is divisible by the number (20) 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 215375960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248054400).

215375960 is an abundant number, since it is smaller than the sum of its proper divisors (280732840).

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

215375960 is a wasteful number, since it uses less digits than its factorization.

215375960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 215375960 is about 14675.6928286197. The cubic root of 215375960 is about 599.4216278404.

The spelling of 215375960 in words is "two hundred fifteen million, three hundred seventy-five thousand, nine hundred sixty".