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75223869 = 37219231171
BaseRepresentation
bin1000111101111…
…01001100111101
312020112202202020
410132331030331
5123224130434
611244150353
71602251400
oct436751475
9166482666
1075223869
1139509896
12212383b9
131277a486
149dc1d37
15690d849
hex47bd33d

75223869 has 48 divisors (see below), whose sum is σ = 128263680. Its totient is φ = 38918880.

The previous prime is 75223867. The next prime is 75223877. The reversal of 75223869 is 96832257.

It is not a de Polignac number, because 75223869 - 21 = 75223867 is a prime.

It is a super-2 number, since 2×752238692 = 11317260934658322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 75223869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75223867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63654 + ... + 64824.

It is an arithmetic number, because the mean of its divisors is an integer number (2672160).

Almost surely, 275223869 is an apocalyptic number.

It is an amenable number.

75223869 is a deficient number, since it is larger than the sum of its proper divisors (53039811).

75223869 is a wasteful number, since it uses less digits than its factorization.

75223869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1223 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 75223869 is about 8673.1694898693. The cubic root of 75223869 is about 422.1355123597.

The spelling of 75223869 in words is "seventy-five million, two hundred twenty-three thousand, eight hundred sixty-nine".

Divisors: 1 3 7 19 21 23 49 57 69 133 147 161 399 437 483 931 1127 1171 1311 2793 3059 3381 3513 8197 9177 21413 22249 24591 26933 57379 64239 66747 80799 155743 172137 188531 467229 511727 565593 1090201 1319717 1535181 3270603 3582089 3959151 10746267 25074623 75223869