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85630370 = 2573139461
BaseRepresentation
bin1010001101010…
…01110110100010
312222010110210012
411012221312202
5133410132440
612255204522
72056563140
oct506516642
9188113705
1085630370
1144377401
1224816742
1314982077
14b530590
1577b6e65
hex51a9da2

85630370 has 32 divisors (see below), whose sum is σ = 181840896. Its totient is φ = 28411200.

The previous prime is 85630367. The next prime is 85630393. The reversal of 85630370 is 7303658.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 17561 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (5682528).

Almost surely, 285630370 is an apocalyptic number.

85630370 is an abundant number, since it is smaller than the sum of its proper divisors (96210526).

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

85630370 is a wasteful number, since it uses less digits than its factorization.

85630370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39506.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 85630370 is about 9253.6679214245. The cubic root of 85630370 is about 440.7672048761.

The spelling of 85630370 in words is "eighty-five million, six hundred thirty thousand, three hundred seventy".

Divisors: 1 2 5 7 10 14 31 35 62 70 155 217 310 434 1085 2170 39461 78922 197305 276227 394610 552454 1223291 1381135 2446582 2762270 6116455 8563037 12232910 17126074 42815185 85630370