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180972656148 = 22337939791701
BaseRepresentation
bin1010100010001011001…
…1111001011000010100
3122022010021222110122110
42220202303321120110
510431112444444043
6215045424031020
716034446124214
oct2504263713024
9568107873573
10180972656148
116a82838a139
122b0a7462470
13140b12c972b
148a8b06a244
154a92cd7b33
hex2a22cf9614

180972656148 has 24 divisors (see below), whose sum is σ = 423383709280. Its totient is φ = 60165050400.

The previous prime is 180972656147. The next prime is 180972656167. The reversal of 180972656148 is 841656279081.

It is a super-2 number, since 2×1809726561482 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180972656147) 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 7 ways as a sum of consecutive naturals, for example, 19891303 + ... + 19900398.

Almost surely, 2180972656148 is an apocalyptic number.

It is an amenable number.

180972656148 is an abundant number, since it is smaller than the sum of its proper divisors (242411053132).

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

180972656148 is a wasteful number, since it uses less digits than its factorization.

180972656148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39792087 (or 39792085 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 180972656148 in words is "one hundred eighty billion, nine hundred seventy-two million, six hundred fifty-six thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 379 758 1137 1516 2274 4548 39791701 79583402 119375103 159166804 238750206 477500412 15081054679 30162109358 45243164037 60324218716 90486328074 180972656148