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61375028 = 221113611759
BaseRepresentation
bin1110101000100…
…0001000110100
311021111011201012
43222020020310
5111203000103
610031251352
71343451641
oct352101064
9137434635
1061375028
113170aa70
1218679b58
13c93bab0
148218dc8
1555c52d8
hex3a88234

61375028 has 48 divisors (see below), whose sum is σ = 128325120. Its totient is φ = 25315200.

The previous prime is 61375019. The next prime is 61375057. The reversal of 61375028 is 82057316.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61374985 and 61375003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34013 + ... + 35771.

It is an arithmetic number, because the mean of its divisors is an integer number (2673440).

Almost surely, 261375028 is an apocalyptic number.

It is an amenable number.

61375028 is an abundant number, since it is smaller than the sum of its proper divisors (66950092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61375028 is a wasteful number, since it uses less digits than its factorization.

61375028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 61375028 is about 7834.2215950278. The cubic root of 61375028 is about 394.4547901862.

The spelling of 61375028 in words is "sixty-one million, three hundred seventy-five thousand, twenty-eight".

Divisors: 1 2 4 11 13 22 26 44 52 61 122 143 244 286 572 671 793 1342 1586 1759 2684 3172 3518 7036 8723 17446 19349 22867 34892 38698 45734 77396 91468 107299 214598 251537 429196 503074 1006148 1180289 1394887 2360578 2789774 4721156 5579548 15343757 30687514 61375028