215452320 has 48 divisors (see below), whose sum is σ = 678676320. Its totient is φ = 57453824.

The previous prime is 215452309. The next prime is 215452331. The reversal of 215452320 is 23254512.

It is an interprime number because it is at equal distance from previous prime (215452309) and next prime (215452331).

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223950 + ... + 224909.

It is an arithmetic number, because the mean of its divisors is an integer number (14139090).

Almost surely, 2^215452320 is an apocalyptic number.

215452320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215452320 is an abundant number, since it is smaller than the sum of its proper divisors (463224000).

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

215452320 is a wasteful number, since it uses less digits than its factorization.

215452320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448877 (or 448869 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 215452320 is about 14678.2941788206. The cubic root of 215452320 is about 599.4924596813.

The spelling of 215452320 in words is "two hundred fifteen million, four hundred fifty-two thousand, three hundred twenty".