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290088742 = 2236306277
BaseRepresentation
bin10001010010100…
…110011100100110
3202012212000221111
4101102212130212
51043230314432
644441335234
710121466526
oct2122463446
9665760844
10290088742
11139824a69
128119751a
134813a758
142a753686
151a702347
hex114a6726

290088742 has 8 divisors (see below), whose sum is σ = 454052016. Its totient is φ = 138738072.

The previous prime is 290088739. The next prime is 290088767. The reversal of 290088742 is 247880092.

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

It is a junction number, because it is equal to n+sod(n) for n = 290088695 and 290088704.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3153093 + ... + 3153184.

It is an arithmetic number, because the mean of its divisors is an integer number (56756502).

Almost surely, 2290088742 is an apocalyptic number.

290088742 is a deficient number, since it is larger than the sum of its proper divisors (163963274).

290088742 is a wasteful number, since it uses less digits than its factorization.

290088742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306302.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 290088742 is about 17031.9917214635. The cubic root of 290088742 is about 661.9781043193.

The spelling of 290088742 in words is "two hundred ninety million, eighty-eight thousand, seven hundred forty-two".

Divisors: 1 2 23 46 6306277 12612554 145044371 290088742