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70028304 = 2431785819
BaseRepresentation
bin1000010110010…
…00110000010000
311212202210202220
410023020300100
5120411401204
610540541040
71510142103
oct413106020
9155683686
1070028304
1136590335
121b551780
131167b688
14942c73a
1562341d9
hex42c8c10

70028304 has 40 divisors (see below), whose sum is σ = 191550240. Its totient is φ = 21969408.

The previous prime is 70028293. The next prime is 70028311. The reversal of 70028304 is 40382007.

It is a super-2 number, since 2×700283042 = 9807926722232832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42094 + ... + 43725.

It is an arithmetic number, because the mean of its divisors is an integer number (4788756).

Almost surely, 270028304 is an apocalyptic number.

It is an amenable number.

70028304 is an abundant number, since it is smaller than the sum of its proper divisors (121521936).

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

70028304 is a wasteful number, since it uses less digits than its factorization.

70028304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85847 (or 85841 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 70028304 is about 8368.2915819180. The cubic root of 70028304 is about 412.1840695716.

The spelling of 70028304 in words is "seventy million, twenty-eight thousand, three hundred four".

Divisors: 1 2 3 4 6 8 12 16 17 24 34 48 51 68 102 136 204 272 408 816 85819 171638 257457 343276 514914 686552 1029828 1373104 1458923 2059656 2917846 4119312 4376769 5835692 8753538 11671384 17507076 23342768 35014152 70028304