215147040 has 192 divisors, whose sum is σ = 705438720. Its totient is φ = 55086080.

The previous prime is 215147003. The next prime is 215147041. The reversal of 215147040 is 40741512.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 215147040.

It is not an unprimeable number, because it can be changed into a prime (215147041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2010667 + ... + 2010773.

It is an arithmetic number, because the mean of its divisors is an integer number (3674160).

Almost surely, 2^215147040 is an apocalyptic number.

215147040 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 215147040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352719360).

215147040 is an abundant number, since it is smaller than the sum of its proper divisors (490291680).

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

215147040 is a wasteful number, since it uses less digits than its factorization.

215147040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 215147040 is about 14667.8914640108. The cubic root of 215147040 is about 599.2091803540.

Adding to 215147040 its reverse (40741512), we get a palindrome (255888552).

The spelling of 215147040 in words is "two hundred fifteen million, one hundred forty-seven thousand, forty".