Search a number
-
+
47048621 = 108743283
BaseRepresentation
bin1011001101111…
…0011110101101
310021112022120112
42303132132231
544021023441
64400225405
71110622664
oct263363655
9107468515
1047048621
1124615364
121390b265
139993c29
146369ddb
1541e54eb
hex2cde7ad

47048621 has 4 divisors (see below), whose sum is σ = 47092992. Its totient is φ = 47004252.

The previous prime is 47048611. The next prime is 47048623. The reversal of 47048621 is 12684074.

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.

It is a cyclic number.

It is not a de Polignac number, because 47048621 - 218 = 46786477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47048623) 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, 20555 + ... + 22728.

It is an arithmetic number, because the mean of its divisors is an integer number (11773248).

Almost surely, 247048621 is an apocalyptic number.

It is an amenable number.

47048621 is a deficient number, since it is larger than the sum of its proper divisors (44371).

47048621 is a wasteful number, since it uses less digits than its factorization.

47048621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44370.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 47048621 is about 6859.1997346629. The cubic root of 47048621 is about 361.0070081998.

The spelling of 47048621 in words is "forty-seven million, forty-eight thousand, six hundred twenty-one".

Divisors: 1 1087 43283 47048621