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61238849 = 771123217
BaseRepresentation
bin1110100110011…
…0111001000001
311021020020220112
43221212321001
5111134120344
610024321105
71342343630
oct351467101
9137206815
1061238849
1131627721
1218613195
13c8c1b09
1481c1517
155599c9e
hex3a66e41

61238849 has 8 divisors (see below), whose sum is σ = 70973568. Its totient is φ = 51750720.

The previous prime is 61238833. The next prime is 61238887. The reversal of 61238849 is 94883216.

61238849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61238849 - 24 = 61238833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61238809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61112 + ... + 62105.

It is an arithmetic number, because the mean of its divisors is an integer number (8871696).

Almost surely, 261238849 is an apocalyptic number.

It is an amenable number.

61238849 is a deficient number, since it is larger than the sum of its proper divisors (9734719).

61238849 is a wasteful number, since it uses less digits than its factorization.

61238849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123295.

The product of its digits is 82944, while the sum is 41.

The square root of 61238849 is about 7825.5254775638. The cubic root of 61238849 is about 394.1628351984.

The spelling of 61238849 in words is "sixty-one million, two hundred thirty-eight thousand, eight hundred forty-nine".

Divisors: 1 7 71 497 123217 862519 8748407 61238849