215948620 has 48 divisors (see below), whose sum is σ = 484656480. Its totient is φ = 80538624.

The previous prime is 215948609. The next prime is 215948639. The reversal of 215948620 is 26849512.

It is a self number, because there is not a number n which added to its sum of digits gives 215948620.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34147 + ... + 39973.

It is an arithmetic number, because the mean of its divisors is an integer number (10097010).

Almost surely, 2^215948620 is an apocalyptic number.

215948620 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 215948620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242328240).

215948620 is an abundant number, since it is smaller than the sum of its proper divisors (268707860).

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

215948620 is a wasteful number, since it uses less digits than its factorization.

215948620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962 (or 5960 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 215948620 is about 14695.1903696414. The cubic root of 215948620 is about 599.9524221533.

The spelling of 215948620 in words is "two hundred fifteen million, nine hundred forty-eight thousand, six hundred twenty".