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38136580 = 2251906829
BaseRepresentation
bin1001000101111…
…0101100000100
32122202112112221
42101132230010
534230332310
63441222124
7642104236
oct221365404
978675487
1038136580
111a588639
1210931944
137b93631
1450ca256
153534ada
hex245eb04

38136580 has 12 divisors (see below), whose sum is σ = 80086860. Its totient is φ = 15254624.

The previous prime is 38136551. The next prime is 38136583. The reversal of 38136580 is 8563183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26357956 + 11778624 = 5134^2 + 3432^2 .

It is not an unprimeable number, because it can be changed into a prime (38136583) 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 3 ways as a sum of consecutive naturals, for example, 953395 + ... + 953434.

It is an arithmetic number, because the mean of its divisors is an integer number (6673905).

Almost surely, 238136580 is an apocalyptic number.

It is an amenable number.

38136580 is an abundant number, since it is smaller than the sum of its proper divisors (41950280).

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

38136580 is a wasteful number, since it uses less digits than its factorization.

38136580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906838 (or 1906836 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 38136580 is about 6175.4821674101. The cubic root of 38136580 is about 336.5998473191.

The spelling of 38136580 in words is "thirty-eight million, one hundred thirty-six thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 1906829 3813658 7627316 9534145 19068290 38136580