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38388000401 = 131293038171
BaseRepresentation
bin100011110000000110…
…100110011010010001
310200002022210110202122
4203300012212122101
51112104312003101
625345112024025
72526201422342
oct436006463221
9120068713678
1038388000401
111530a030973
127534092015
13380a107a4a
141c024720c9
15eea21751b
hex8f01a6691

38388000401 has 4 divisors (see below), whose sum is σ = 38681038704. Its totient is φ = 38094962100.

The previous prime is 38388000397. The next prime is 38388000421. The reversal of 38388000401 is 10400088383.

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: 10400088383 = 71914464657.

It is a cyclic number.

It is not a de Polignac number, because 38388000401 - 22 = 38388000397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38388000421) 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, 146518955 + ... + 146519216.

It is an arithmetic number, because the mean of its divisors is an integer number (9670259676).

Almost surely, 238388000401 is an apocalyptic number.

It is an amenable number.

38388000401 is a deficient number, since it is larger than the sum of its proper divisors (293038303).

38388000401 is a wasteful number, since it uses less digits than its factorization.

38388000401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293038302.

The product of its (nonzero) digits is 18432, while the sum is 35.

Adding to 38388000401 its reverse (10400088383), we get a palindrome (48788088784).

The spelling of 38388000401 in words is "thirty-eight billion, three hundred eighty-eight million, four hundred one", and thus it is an aban number.

Divisors: 1 131 293038171 38388000401