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38022681 = 312674227
BaseRepresentation
bin1001000100001…
…0111000011001
32122112202022110
42101002320121
534213211211
63434542533
7641121204
oct221027031
978482273
1038022681
111a510004
1210897a49
137b53838
14509a93b
153510ea6
hex2442e19

38022681 has 4 divisors (see below), whose sum is σ = 50696912. Its totient is φ = 25348452.

The previous prime is 38022679. The next prime is 38022713. The reversal of 38022681 is 18622083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38022681 - 21 = 38022679 is a prime.

It is a super-2 number, since 2×380226812 = 2891448540855522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38022601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6337111 + ... + 6337116.

It is an arithmetic number, because the mean of its divisors is an integer number (12674228).

Almost surely, 238022681 is an apocalyptic number.

It is an amenable number.

38022681 is a deficient number, since it is larger than the sum of its proper divisors (12674231).

38022681 is a wasteful number, since it uses less digits than its factorization.

38022681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674230.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 38022681 is about 6166.2534005667. The cubic root of 38022681 is about 336.2644159415.

The spelling of 38022681 in words is "thirty-eight million, twenty-two thousand, six hundred eighty-one".

Divisors: 1 3 12674227 38022681