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61087950 = 232527114143
BaseRepresentation
bin1110100100001…
…0000011001110
311020221120220200
43221002003032
5111114303300
610021154330
71341144660
oct351020316
9136846820
1061087950
1131534310
121855b9a6
13c86b221
148182530
15556a200
hex3a420ce

61087950 has 288 divisors, whose sum is σ = 214486272. Its totient is φ = 12096000.

The previous prime is 61087937. The next prime is 61087963. The reversal of 61087950 is 5978016.

It is an interprime number because it is at equal distance from previous prime (61087937) and next prime (61087963).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1420629 + ... + 1420671.

It is an arithmetic number, because the mean of its divisors is an integer number (744744).

It is a vampire number, since it can be written as 70958610 (with its own digits).

Almost surely, 261087950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61087950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107243136).

61087950 is an abundant number, since it is smaller than the sum of its proper divisors (153398322).

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

61087950 is a wasteful number, since it uses less digits than its factorization.

61087950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 61087950 is about 7815.8780696733. The cubic root of 61087950 is about 393.8388159436.

The spelling of 61087950 in words is "sixty-one million, eighty-seven thousand, nine hundred fifty".