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70691488 = 257401787
BaseRepresentation
bin1000011011010…
…10101010100000
311221000111111021
410031222222200
5121044111423
611003055224
71515603430
oct415525240
9157014437
1070691488
11369a361a
121b811514
13118514aa
1495622c0
15631595d
hex436aaa0

70691488 has 48 divisors (see below), whose sum is σ = 159655104. Its totient is φ = 30182400.

The previous prime is 70691477. The next prime is 70691567. The reversal of 70691488 is 88419607.

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, 89431 + ... + 90217.

It is an arithmetic number, because the mean of its divisors is an integer number (3326148).

Almost surely, 270691488 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 70691488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79827552).

70691488 is an abundant number, since it is smaller than the sum of its proper divisors (88963616).

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

70691488 is a wasteful number, since it uses less digits than its factorization.

70691488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 70691488 is about 8407.8230238273. The cubic root of 70691488 is about 413.4811426505.

The spelling of 70691488 in words is "seventy million, six hundred ninety-one thousand, four hundred eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 401 787 802 1574 1604 2807 3148 3208 5509 5614 6296 6416 11018 11228 12592 12832 22036 22456 25184 44072 44912 88144 89824 176288 315587 631174 1262348 2209109 2524696 4418218 5049392 8836436 10098784 17672872 35345744 70691488