215280000 has 480 divisors, whose sum is σ = 869909040. Its totient is φ = 50688000.

The previous prime is 215279969. The next prime is 215280047. The reversal of 215280000 is 82512.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9359989 + ... + 9360011.

Almost surely, 2^215280000 is an apocalyptic number.

215280000 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 215280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434954520).

215280000 is an abundant number, since it is smaller than the sum of its proper divisors (654629040).

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

215280000 is a wasteful number, since it uses less digits than its factorization.

215280000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 215280000 is about 14672.4231127650. The cubic root of 215280000 is about 599.3325912178.

The spelling of 215280000 in words is "two hundred fifteen million, two hundred eighty thousand".