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70825144 = 2313681011
BaseRepresentation
bin1000011100010…
…11010010111000
311221021021211111
410032023102320
5121112401034
611010010104
71520001205
oct416132270
9157237744
1070825144
1136a84a85
121b876934
131189a290
149598cac
156340364
hex438b4b8

70825144 has 16 divisors (see below), whose sum is σ = 143012520. Its totient is φ = 32688480.

The previous prime is 70825121. The next prime is 70825177. The reversal of 70825144 is 44152807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340402 + ... + 340609.

Almost surely, 270825144 is an apocalyptic number.

It is an amenable number.

70825144 is an abundant number, since it is smaller than the sum of its proper divisors (72187376).

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

70825144 is a wasteful number, since it uses less digits than its factorization.

70825144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681030 (or 681026 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 70825144 is about 8415.7675823421. The cubic root of 70825144 is about 413.7415674176.

It can be divided in two parts, 708 and 25144, that added together give a palindrome (25852).

The spelling of 70825144 in words is "seventy million, eight hundred twenty-five thousand, one hundred forty-four".

Divisors: 1 2 4 8 13 26 52 104 681011 1362022 2724044 5448088 8853143 17706286 35412572 70825144