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75018970 = 2513577069
BaseRepresentation
bin1000111100010…
…11001011011010
312020011100200101
410132023023122
5123201101340
611235530014
71600436125
oct436131332
9166140611
1075018970
1139389954
122115990a
1312708130
149d6b3bc
1568bcc9a
hex478b2da

75018970 has 16 divisors (see below), whose sum is σ = 145421640. Its totient is φ = 27699264.

The previous prime is 75018947. The next prime is 75018997. The reversal of 75018970 is 7981057.

It can be written as a sum of positive squares in 4 ways, for example, as 21743569 + 53275401 = 4663^2 + 7299^2 .

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, 288405 + ... + 288664.

Almost surely, 275018970 is an apocalyptic number.

75018970 is a deficient number, since it is larger than the sum of its proper divisors (70402670).

75018970 is a wasteful number, since it uses less digits than its factorization.

75018970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577089.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 75018970 is about 8661.3492020585. The cubic root of 75018970 is about 421.7518850262.

It can be divided in two parts, 7501 and 8970, that added together give a triangular number (16471 = T181).

The spelling of 75018970 in words is "seventy-five million, eighteen thousand, nine hundred seventy".

Divisors: 1 2 5 10 13 26 65 130 577069 1154138 2885345 5770690 7501897 15003794 37509485 75018970