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238697472 = 21031343139
BaseRepresentation
bin11100011101000…
…11110000000000
3121122011002101010
432032203300000
5442101304342
635404040520
75625615666
oct1616436000
9548132333
10238697472
11112813a42
1267b33140
133a5b6010
14239b6c36
1515e5029c
hexe3a3c00

238697472 has 176 divisors, whose sum is σ = 706133120. Its totient is φ = 71221248.

The previous prime is 238697413. The next prime is 238697479. The reversal of 238697472 is 274796832.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238697479) 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 15 ways as a sum of consecutive naturals, for example, 1717179 + ... + 1717317.

It is an arithmetic number, because the mean of its divisors is an integer number (4012120).

Almost surely, 2238697472 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 238697472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353066560).

238697472 is an abundant number, since it is smaller than the sum of its proper divisors (467435648).

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

238697472 is a wasteful number, since it uses less digits than its factorization.

238697472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 200 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 238697472 is about 15449.8372806965. The cubic root of 238697472 is about 620.3202230641.

The spelling of 238697472 in words is "two hundred thirty-eight million, six hundred ninety-seven thousand, four hundred seventy-two".