Search a number
-
+
38770669 = 75538667
BaseRepresentation
bin1001001111100…
…1011111101101
32200221202100201
42103321133231
534411130134
63502553501
7650355010
oct223713755
980852321
1038770669
111a980a83
1210b98891
138056132
145213377
15360c914
hex24f97ed

38770669 has 4 divisors (see below), whose sum is σ = 44309344. Its totient is φ = 33231996.

The previous prime is 38770661. The next prime is 38770681. The reversal of 38770669 is 96607783.

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: 96607783 = 711360673.

It is not a de Polignac number, because 38770669 - 23 = 38770661 is a prime.

It is a super-2 number, since 2×387706692 = 3006329549415122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38770661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2769327 + ... + 2769340.

It is an arithmetic number, because the mean of its divisors is an integer number (11077336).

Almost surely, 238770669 is an apocalyptic number.

It is an amenable number.

38770669 is a deficient number, since it is larger than the sum of its proper divisors (5538675).

38770669 is an equidigital number, since it uses as much as digits as its factorization.

38770669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538674.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 38770669 is about 6226.6097517028. The cubic root of 38770669 is about 338.4551278095.

The spelling of 38770669 in words is "thirty-eight million, seven hundred seventy thousand, six hundred sixty-nine".

Divisors: 1 7 5538667 38770669