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89616970 = 25233112569
BaseRepresentation
bin1010101011101…
…11001001001010
320020122000101001
411111313021022
5140420220340
612520445214
72135505652
oct525671112
9206560331
1089616970
114664a613
122601980a
13157497c1
14bc8b362
157d0329a
hex557724a

89616970 has 32 divisors (see below), whose sum is σ = 173767680. Its totient is φ = 33179520.

The previous prime is 89616959. The next prime is 89616971. The reversal of 89616970 is 7961698.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 89616970.

It is not an unprimeable number, because it can be changed into a prime (89616971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (5430240).

Almost surely, 289616970 is an apocalyptic number.

89616970 is a deficient number, since it is larger than the sum of its proper divisors (84150710).

89616970 is a wasteful number, since it uses less digits than its factorization.

89616970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 89616970 is about 9466.6240022513. The cubic root of 89616970 is about 447.5038252745.

It can be divided in two parts, 8961 and 6970, that added together give a triangular number (15931 = T178).

The spelling of 89616970 in words is "eighty-nine million, six hundred sixteen thousand, nine hundred seventy".

Divisors: 1 2 5 10 23 31 46 62 115 155 230 310 713 1426 3565 7130 12569 25138 62845 125690 289087 389639 578174 779278 1445435 1948195 2890870 3896390 8961697 17923394 44808485 89616970