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70276890 = 23513717099
BaseRepresentation
bin1000011000001…
…01011100011010
311220020102202210
410030011130122
5120442330030
610550135550
71512225615
oct414053432
9156212683
1070276890
1136740082
121b6515b6
1311737878
14949517c
156282bb0
hex430571a

70276890 has 32 divisors (see below), whose sum is σ = 169905600. Its totient is φ = 18602624.

The previous prime is 70276883. The next prime is 70276901. The reversal of 70276890 is 9867207.

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 15 ways as a sum of consecutive naturals, for example, 4440 + ... + 12659.

It is an arithmetic number, because the mean of its divisors is an integer number (5309550).

Almost surely, 270276890 is an apocalyptic number.

70276890 is an abundant number, since it is smaller than the sum of its proper divisors (99628710).

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

70276890 is a wasteful number, since it uses less digits than its factorization.

70276890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17246.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 70276890 is about 8383.1312765577. The cubic root of 70276890 is about 412.6712163431.

The spelling of 70276890 in words is "seventy million, two hundred seventy-six thousand, eight hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 137 274 411 685 822 1370 2055 4110 17099 34198 51297 85495 102594 170990 256485 512970 2342563 4685126 7027689 11712815 14055378 23425630 35138445 70276890