215470680 has 64 divisors (see below), whose sum is σ = 649317600. Its totient is φ = 57200640.

The previous prime is 215470663. The next prime is 215470681. The reversal of 215470680 is 86074512.

It is a super-2 number, since 2×215470680² = 92855227879324800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215470681) 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, 23560 + ... + 31400.

Almost surely, 2^215470680 is an apocalyptic number.

215470680 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 215470680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324658800).

215470680 is an abundant number, since it is smaller than the sum of its proper divisors (433846920).

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

215470680 is a wasteful number, since it uses less digits than its factorization.

215470680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084 (or 8080 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 215470680 is about 14678.9195787701. The cubic root of 215470680 is about 599.5094879948.

The spelling of 215470680 in words is "two hundred fifteen million, four hundred seventy thousand, six hundred eighty".