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38280913 = 116735171
BaseRepresentation
bin1001001000000…
…1111011010001
32200000212112121
42102001323101
534244442123
63444254241
7643245106
oct222017321
980025477
1038280913
111a677020
12109a1381
137c14238
145126aad
15356275d
hex2481ed1

38280913 has 8 divisors (see below), whose sum is σ = 41831136. Its totient is φ = 34742400.

The previous prime is 38280887. The next prime is 38280917. The reversal of 38280913 is 31908283.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38280913 - 25 = 38280881 is a prime.

It is a super-2 number, since 2×382809132 = 2930856600227138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38280917) 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 7 ways as a sum of consecutive naturals, for example, 4818 + ... + 9988.

It is an arithmetic number, because the mean of its divisors is an integer number (5228892).

Almost surely, 238280913 is an apocalyptic number.

It is an amenable number.

38280913 is a deficient number, since it is larger than the sum of its proper divisors (3550223).

38280913 is a wasteful number, since it uses less digits than its factorization.

38280913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 38280913 is about 6187.1571016098. The cubic root of 38280913 is about 337.0239484958.

It can be divided in two parts, 38280 and 913, that added together give a palindrome (39193).

The spelling of 38280913 in words is "thirty-eight million, two hundred eighty thousand, nine hundred thirteen".

Divisors: 1 11 673 5171 7403 56881 3480083 38280913