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BaseRepresentation
bin10010111111100…
…100000000000100
3211012121012221111
4102333210000010
51123033334140
651341454404
710616333542
oct2277440004
9735535844
10318652420
11153964309
128a871404
135102ba38
151ce957ea
hex12fe4004

318652420 has 96 divisors (see below), whose sum is σ = 754427520. Its totient is φ = 112343040.

The previous prime is 318652393. The next prime is 318652423. The reversal of 318652420 is 24256813.

It is not an unprimeable number, because it can be changed into a prime (318652423) 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, 690990 + ... + 691450.

It is an arithmetic number, because the mean of its divisors is an integer number (7858620).

Almost surely, 2318652420 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 318652420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377213760).

318652420 is an abundant number, since it is smaller than the sum of its proper divisors (435775100).

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

318652420 is a wasteful number, since it uses less digits than its factorization.

318652420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 318652420 is about 17850.8380755638. The cubic root of 318652420 is about 683.0288904917.

The spelling of 318652420 in words is "three hundred eighteen million, six hundred fifty-two thousand, four hundred twenty".