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38228071 = 75461153
BaseRepresentation
bin1001000111010…
…1000001100111
32122221012001111
42101311001213
534241244241
63443205451
7642635050
oct221650147
978835044
1038228071
111a640352
1210976887
137bc617b
145111727
153551c81
hex2475067

38228071 has 4 divisors (see below), whose sum is σ = 43689232. Its totient is φ = 32766912.

The previous prime is 38228059. The next prime is 38228101. The reversal of 38228071 is 17082283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17082283 = 43339451.

It is a cyclic number.

It is not a de Polignac number, because 38228071 - 213 = 38219879 is a prime.

It is a super-2 number, since 2×382280712 = 2922770824762082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38228011) 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, 2730570 + ... + 2730583.

It is an arithmetic number, because the mean of its divisors is an integer number (10922308).

Almost surely, 238228071 is an apocalyptic number.

38228071 is a deficient number, since it is larger than the sum of its proper divisors (5461161).

38228071 is an equidigital number, since it uses as much as digits as its factorization.

38228071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461160.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 38228071 is about 6182.8853296823. The cubic root of 38228071 is about 336.8688039886.

The spelling of 38228071 in words is "thirty-eight million, two hundred twenty-eight thousand, seventy-one".

Divisors: 1 7 5461153 38228071