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38102641 = 274113901
BaseRepresentation
bin1001000101011…
…0011001110001
32122200210222221
42101112121301
534223241031
63440401041
7641603263
oct221263161
978623887
1038102641
111a565095
1210916181
137b81055
1450bbb33
153529a11
hex2456671

38102641 has 4 divisors (see below), whose sum is σ = 38119284. Its totient is φ = 38086000.

The previous prime is 38102633. The next prime is 38102671. The reversal of 38102641 is 14620183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14620183 = 17981677.

It can be written as a sum of positive squares in 2 ways, for example, as 21529600 + 16573041 = 4640^2 + 4071^2 .

It is a cyclic number.

It is not a de Polignac number, because 38102641 - 23 = 38102633 is a prime.

It is a super-2 number, since 2×381026412 = 2903622502349762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38102671) 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, 4210 + ... + 9691.

It is an arithmetic number, because the mean of its divisors is an integer number (9529821).

Almost surely, 238102641 is an apocalyptic number.

It is an amenable number.

38102641 is a deficient number, since it is larger than the sum of its proper divisors (16643).

38102641 is a wasteful number, since it uses less digits than its factorization.

38102641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16642.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 38102641 is about 6172.7336731792. The cubic root of 38102641 is about 336.4999672502.

The spelling of 38102641 in words is "thirty-eight million, one hundred two thousand, six hundred forty-one".

Divisors: 1 2741 13901 38102641