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61234489 = 199307711
BaseRepresentation
bin1110100110010…
…1110100111001
311021020000221001
43221211310321
5111134000424
610024245001
71342325131
oct351456471
9137200831
1061234489
1131624418
1218610761
13c8bcb34
1481bdac1
155598844
hex3a65d39

61234489 has 4 divisors (see below), whose sum is σ = 61542400. Its totient is φ = 60926580.

The previous prime is 61234469. The next prime is 61234501. The reversal of 61234489 is 98443216.

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 61234489 - 211 = 61232441 is a prime.

It is a super-2 number, since 2×612344892 = 7499325286182242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61234469) 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, 153657 + ... + 154054.

It is an arithmetic number, because the mean of its divisors is an integer number (15385600).

Almost surely, 261234489 is an apocalyptic number.

It is an amenable number.

61234489 is a deficient number, since it is larger than the sum of its proper divisors (307911).

61234489 is a wasteful number, since it uses less digits than its factorization.

61234489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307910.

The product of its digits is 41472, while the sum is 37.

The square root of 61234489 is about 7825.2468970634. The cubic root of 61234489 is about 394.1534806206.

The spelling of 61234489 in words is "sixty-one million, two hundred thirty-four thousand, four hundred eighty-nine".

Divisors: 1 199 307711 61234489