215678160 has 160 divisors (see below), whose sum is σ = 767093760. Its totient is φ = 55641600.

The previous prime is 215678149. The next prime is 215678171. The reversal of 215678160 is 61876512.

It is an interprime number because it is at equal distance from previous prime (215678149) and next prime (215678171).

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 31 ways as a sum of consecutive naturals, for example, 65350 + ... + 68570.

It is an arithmetic number, because the mean of its divisors is an integer number (4794336).

Almost surely, 2^215678160 is an apocalyptic number.

215678160 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 215678160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383546880).

215678160 is an abundant number, since it is smaller than the sum of its proper divisors (551415600).

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

215678160 is a wasteful number, since it uses less digits than its factorization.

215678160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274 (or 3262 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 215678160 is about 14685.9851559233. The cubic root of 215678160 is about 599.7018518707.

The spelling of 215678160 in words is "two hundred fifteen million, six hundred seventy-eight thousand, one hundred sixty".