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215325328 = 24193591973
BaseRepresentation
bin11001101010110…
…01101010010000
3120000011122211011
430311121222100
5420110402303
633211100304
75223143431
oct1465315220
9500148734
10215325328
11100600119
1260141694
13357c1a4a
1420851488
1513d8516d
hexcd59a90

215325328 has 40 divisors (see below), whose sum is σ = 440596800. Its totient is φ = 101660544.

The previous prime is 215325301. The next prime is 215325329. The reversal of 215325328 is 823523512.

It is a self number, because there is not a number n which added to its sum of digits gives 215325328.

It is not an unprimeable number, because it can be changed into a prime (215325329) by changing a digit.

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, 108150 + ... + 110122.

It is an arithmetic number, because the mean of its divisors is an integer number (11014920).

Almost surely, 2215325328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215325328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220298400).

215325328 is an abundant number, since it is smaller than the sum of its proper divisors (225271472).

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

215325328 is a wasteful number, since it uses less digits than its factorization.

215325328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359 (or 2353 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 215325328 is about 14673.9676979336. The cubic root of 215325328 is about 599.3746521636.

The spelling of 215325328 in words is "two hundred fifteen million, three hundred twenty-five thousand, three hundred twenty-eight".

Divisors: 1 2 4 8 16 19 38 76 152 304 359 718 1436 1973 2872 3946 5744 6821 7892 13642 15784 27284 31568 37487 54568 74974 109136 149948 299896 599792 708307 1416614 2833228 5666456 11332912 13457833 26915666 53831332 107662664 215325328