215675460 has 720 divisors, whose sum is σ = 973304640. Its totient is φ = 39191040.

The previous prime is 215675459. The next prime is 215675477. The reversal of 215675460 is 64576512.

It is a happy number.

215675460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 11351331 + ... + 11351349.

It is an arithmetic number, because the mean of its divisors is an integer number (1351812).

Almost surely, 2^215675460 is an apocalyptic number.

215675460 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 215675460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486652320).

215675460 is an abundant number, since it is smaller than the sum of its proper divisors (757629180).

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

215675460 is a wasteful number, since it uses less digits than its factorization.

215675460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 215675460 is about 14685.8932312611. The cubic root of 215675460 is about 599.6993493738.

The spelling of 215675460 in words is "two hundred fifteen million, six hundred seventy-five thousand, four hundred sixty".