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70028032 = 281716091
BaseRepresentation
bin1000010110010…
…00101100000000
311212202210101211
410023020230000
5120411344112
610540535504
71510141234
oct413105400
9155683354
1070028032
1136590108
121b551594
131167b509
14942c5c4
1562340a7
hex42c8b00

70028032 has 36 divisors (see below), whose sum is σ = 148014216. Its totient is φ = 32952320.

The previous prime is 70028029. The next prime is 70028033. The reversal of 70028032 is 23082007.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70027994 and 70028012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70028033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3694 + ... + 12397.

It is an arithmetic number, because the mean of its divisors is an integer number (4111506).

Almost surely, 270028032 is an apocalyptic number.

It is an amenable number.

70028032 is an abundant number, since it is smaller than the sum of its proper divisors (77986184).

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

70028032 is a wasteful number, since it uses less digits than its factorization.

70028032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16124 (or 16110 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 70028032 is about 8368.2753300785. The cubic root of 70028032 is about 412.1835359102.

The spelling of 70028032 in words is "seventy million, twenty-eight thousand, thirty-two".

Divisors: 1 2 4 8 16 17 32 34 64 68 128 136 256 272 544 1088 2176 4352 16091 32182 64364 128728 257456 273547 514912 547094 1029824 1094188 2059648 2188376 4119296 4376752 8753504 17507008 35014016 70028032