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70742784 = 283713159
BaseRepresentation
bin1000011011101…
…11001100000000
311221010002212010
410031313030000
5121102232114
611004132520
71516206120
oct415671400
9157102763
1070742784
1136a29112
121b837140
131186b948
149576c80
156325c59
hex4377300

70742784 has 72 divisors (see below), whose sum is σ = 215192320. Its totient is φ = 20210688.

The previous prime is 70742759. The next prime is 70742801. The reversal of 70742784 is 48724707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204 + ... + 11955.

Almost surely, 270742784 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 70742784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107596160).

70742784 is an abundant number, since it is smaller than the sum of its proper divisors (144449536).

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

70742784 is a wasteful number, since it uses less digits than its factorization.

70742784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13185 (or 13171 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 70742784 is about 8410.8729630164. The cubic root of 70742784 is about 413.5811301746.

The spelling of 70742784 in words is "seventy million, seven hundred forty-two thousand, seven hundred eighty-four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 672 768 896 1344 1792 2688 5376 13159 26318 39477 52636 78954 92113 105272 157908 184226 210544 276339 315816 368452 421088 552678 631632 736904 842176 1105356 1263264 1473808 1684352 2210712 2526528 2947616 3368704 4421424 5053056 5895232 8842848 10106112 11790464 17685696 23580928 35371392 70742784