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22120130232 = 23323894091931
BaseRepresentation
bin10100100110011101…
…100110011010111000
32010002120221001011200
4110212131212122320
5330300223131412
614054543054200
71412105001414
oct244635463270
963076831150
1022120130232
119421267272
124353ba1360
1321169c3275
1410dbad1d44
15896e5c9dc
hex5267666b8

22120130232 has 96 divisors (see below), whose sum is σ = 60240726000. Its totient is φ = 7332641280.

The previous prime is 22120130099. The next prime is 22120130233. The reversal of 22120130232 is 23203102122.

It is a super-2 number, since 2×221201302322 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120130233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11454307 + ... + 11456237.

Almost surely, 222120130232 is an apocalyptic number.

It is an amenable number.

22120130232 is an abundant number, since it is smaller than the sum of its proper divisors (38120595768).

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

22120130232 is a wasteful number, since it uses less digits than its factorization.

22120130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22120130232 its reverse (23203102122), we get a palindrome (45323232354).

The spelling of 22120130232 in words is "twenty-two billion, one hundred twenty million, one hundred thirty thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 389 409 778 818 1167 1227 1556 1636 1931 2334 2454 3112 3272 3501 3681 3862 4668 4908 5793 7002 7362 7724 9336 9816 11586 14004 14724 15448 17379 23172 28008 29448 34758 46344 69516 139032 159101 318202 477303 636404 751159 789779 954606 1272808 1431909 1502318 1579558 1909212 2253477 2369337 2863818 3004636 3159116 3818424 4506954 4738674 5727636 6009272 6318232 6760431 7108011 9013908 9477348 11455272 13520862 14216022 18027816 18954696 27041724 28432044 54083448 56864088 307224031 614448062 921672093 1228896124 1843344186 2457792248 2765016279 3686688372 5530032558 7373376744 11060065116 22120130232