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4388081 = 31141551
BaseRepresentation
bin10000101111010011110001
322020221022112
4100233103301
52110404311
6234015105
752204145
oct20572361
98227275
104388081
112527915
121577495
13ba83c9
14823225
155ba28b
hex42f4f1

4388081 has 4 divisors (see below), whose sum is σ = 4529664. Its totient is φ = 4246500.

The previous prime is 4388071. The next prime is 4388099. The reversal of 4388081 is 1808834.

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 a cyclic number.

It is not a de Polignac number, because 4388081 - 26 = 4388017 is a prime.

It is a super-2 number, since 2×43880812 = 38510509725122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4388071) 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, 70745 + ... + 70806.

It is an arithmetic number, because the mean of its divisors is an integer number (1132416).

Almost surely, 24388081 is an apocalyptic number.

It is an amenable number.

4388081 is a deficient number, since it is larger than the sum of its proper divisors (141583).

4388081 is a wasteful number, since it uses less digits than its factorization.

4388081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141582.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 4388081 is about 2094.7746895549. The cubic root of 4388081 is about 163.7161583427.

The spelling of 4388081 in words is "four million, three hundred eighty-eight thousand, eighty-one".

Divisors: 1 31 141551 4388081