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70215168 = 293172689
BaseRepresentation
bin1000010111101…
…10011000000000
311220010022002210
410023312120000
5120433341133
610544542120
71511550642
oct413663000
9156108083
1070215168
11366a8771
121b621940
131171574a
14947a892
15626e763
hex42f6600

70215168 has 80 divisors (see below), whose sum is σ = 198134640. Its totient is φ = 22020096.

The previous prime is 70215163. The next prime is 70215181. The reversal of 70215168 is 86151207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70215161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24768 + ... + 27456.

It is an arithmetic number, because the mean of its divisors is an integer number (2476683).

Almost surely, 270215168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70215168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99067320).

70215168 is an abundant number, since it is smaller than the sum of its proper divisors (127919472).

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

70215168 is a wasteful number, since it uses less digits than its factorization.

70215168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 70215168 is about 8379.4491465728. The cubic root of 70215168 is about 412.5503688723.

The spelling of 70215168 in words is "seventy million, two hundred fifteen thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 17 24 32 34 48 51 64 68 96 102 128 136 192 204 256 272 384 408 512 544 768 816 1088 1536 1632 2176 2689 3264 4352 5378 6528 8067 8704 10756 13056 16134 21512 26112 32268 43024 45713 64536 86048 91426 129072 137139 172096 182852 258144 274278 344192 365704 516288 548556 688384 731408 1032576 1097112 1376768 1462816 2065152 2194224 2925632 4130304 4388448 5851264 8776896 11702528 17553792 23405056 35107584 70215168