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69149164 = 227109139163
BaseRepresentation
bin1000001111100…
…10000111101100
311211010010211011
410013302013230
5120200233124
610510035004
71466521030
oct407620754
9154103734
1069149164
113603a877
121b1a8a64
1311431486
1492801c0
15610d994
hex41f21ec

69149164 has 48 divisors (see below), whose sum is σ = 141433600. Its totient is φ = 28973376.

The previous prime is 69149161. The next prime is 69149219. The reversal of 69149164 is 46194196.

It is not an unprimeable number, because it can be changed into a prime (69149161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424147 + ... + 424309.

Almost surely, 269149164 is an apocalyptic number.

It is an amenable number.

69149164 is an abundant number, since it is smaller than the sum of its proper divisors (72284436).

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

69149164 is a wasteful number, since it uses less digits than its factorization.

69149164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 420 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 69149164 is about 8315.5976333635. The cubic root of 69149164 is about 410.4519386911.

The spelling of 69149164 in words is "sixty-nine million, one hundred forty-nine thousand, one hundred sixty-four".

Divisors: 1 2 4 7 14 28 109 139 163 218 278 326 436 556 652 763 973 1141 1526 1946 2282 3052 3892 4564 15151 17767 22657 30302 35534 45314 60604 71068 90628 106057 124369 158599 212114 248738 317198 424228 497476 634396 2469613 4939226 9878452 17287291 34574582 69149164