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7070401040 = 245372388649
BaseRepresentation
bin1101001010110110…
…11100001000010000
3200020202012120212012
412211123130020100
5103440010313130
63125331122052
7340132263053
oct64533341020
920222176765
107070401040
112aa9069a4a
121453a43328
13888a85171
144b1044a9a
152b5ac3995
hex1a56dc210

7070401040 has 40 divisors (see below), whose sum is σ = 16882978200. Its totient is φ = 2751722496.

The previous prime is 7070401021. The next prime is 7070401061. The reversal of 7070401040 is 401040707.

It can be written as a sum of positive squares in 4 ways, for example, as 2305536256 + 4764864784 = 48016^2 + 69028^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 7070400997 and 7070401015.

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, 1191365 + ... + 1197284.

It is an arithmetic number, because the mean of its divisors is an integer number (422074455).

Almost surely, 27070401040 is an apocalyptic number.

It is an amenable number.

7070401040 is an abundant number, since it is smaller than the sum of its proper divisors (9812577160).

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

7070401040 is a wasteful number, since it uses less digits than its factorization.

7070401040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388699 (or 2388693 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 7070401040 is about 84085.6767826721. The cubic root of 7070401040 is about 1919.3227718602.

Adding to 7070401040 its reverse (401040707), we get a palindrome (7471441747).

The spelling of 7070401040 in words is "seven billion, seventy million, four hundred one thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 37 40 74 80 148 185 296 370 592 740 1480 2960 2388649 4777298 9554596 11943245 19109192 23886490 38218384 47772980 88380013 95545960 176760026 191091920 353520052 441900065 707040104 883800130 1414080208 1767600260 3535200520 7070401040