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38622427 = 138127967
BaseRepresentation
bin1001001101010…
…1010011011011
32200200020000021
42103111103123
534341404202
63455451311
7646166554
oct223252333
980606007
1038622427
111a88a668
1210b26b37
13800380c
1451b532b
1535cda37
hex24d54db

38622427 has 4 divisors (see below), whose sum is σ = 38651776. Its totient is φ = 38593080.

The previous prime is 38622407. The next prime is 38622433. The reversal of 38622427 is 72422683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72422683 = 202735729.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38622427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38622392 and 38622401.

It is not an unprimeable number, because it can be changed into a prime (38622407) 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, 12603 + ... + 15364.

It is an arithmetic number, because the mean of its divisors is an integer number (9662944).

Almost surely, 238622427 is an apocalyptic number.

38622427 is a deficient number, since it is larger than the sum of its proper divisors (29349).

38622427 is a wasteful number, since it uses less digits than its factorization.

38622427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29348.

The product of its digits is 32256, while the sum is 34.

The square root of 38622427 is about 6214.6944414026. The cubic root of 38622427 is about 338.0232089615.

The spelling of 38622427 in words is "thirty-eight million, six hundred twenty-two thousand, four hundred twenty-seven".

Divisors: 1 1381 27967 38622427