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38060405 = 5312892
BaseRepresentation
bin1001000100110…
…0000101110101
32122121200001122
42101030011311
534220413110
63435433325
7641336165
oct221140565
978550048
1038060405
111a536389
12108b5845
137b67a66
1450aa5a5
15351c255
hex244c175

38060405 has 18 divisors (see below), whose sum is σ = 47729538. Its totient is φ = 29135040.

The previous prime is 38060371. The next prime is 38060417. The reversal of 38060405 is 50406083.

It can be written as a sum of positive squares in 3 ways, for example, as 3844 + 38056561 = 62^2 + 6169^2 .

It is not a de Polignac number, because 38060405 - 212 = 38056309 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 427601 + ... + 427689.

It is an arithmetic number, because the mean of its divisors is an integer number (2651641).

Almost surely, 238060405 is an apocalyptic number.

It is an amenable number.

38060405 is a deficient number, since it is larger than the sum of its proper divisors (9669133).

38060405 is an frugal number, since it uses more digits than its factorization.

38060405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 38060405 is about 6169.3115499219. The cubic root of 38060405 is about 336.3755868322.

Multiplying 38060405 by its product of nonzero digits (2880), we get a square (109613966400 = 3310802).

Adding to 38060405 its reverse (50406083), we get a palindrome (88466488).

The spelling of 38060405 in words is "thirty-eight million, sixty thousand, four hundred five".

Divisors: 1 5 31 89 155 445 961 2759 4805 7921 13795 39605 85529 245551 427645 1227755 7612081 38060405