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38077081 = 75439583
BaseRepresentation
bin1001000101000…
…0001010011001
32122122111221021
42101100022121
534221431311
63440042441
7641435620
oct221201231
978574837
1038077081
111a547969
1210903421
137b72523
1450b26b7
153522171
hex2450299

38077081 has 4 divisors (see below), whose sum is σ = 43516672. Its totient is φ = 32637492.

The previous prime is 38077063. The next prime is 38077103. The reversal of 38077081 is 18077083.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18077083 = 131137993.

It is a cyclic number.

It is not a de Polignac number, because 38077081 - 27 = 38076953 is a prime.

It is a super-2 number, since 2×380770812 = 2899728194961122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38077031) 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, 2719785 + ... + 2719798.

It is an arithmetic number, because the mean of its divisors is an integer number (10879168).

Almost surely, 238077081 is an apocalyptic number.

It is an amenable number.

38077081 is a deficient number, since it is larger than the sum of its proper divisors (5439591).

38077081 is an equidigital number, since it uses as much as digits as its factorization.

38077081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5439590.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 38077081 is about 6170.6629303504. The cubic root of 38077081 is about 336.4247068231.

The spelling of 38077081 in words is "thirty-eight million, seventy-seven thousand, eighty-one".

Divisors: 1 7 5439583 38077081