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130023412 = 22172137821
BaseRepresentation
bin1111011111111…
…11111111110100
3100001122212120221
413233333333310
5231241222122
620522504124
73136116001
oct757777764
9301585527
10130023412
1167438572
1237665044
1320c2633c
14133a88a8
15b6356c7
hex7bffff4

130023412 has 36 divisors (see below), whose sum is σ = 243773964. Its totient is φ = 60666880.

The previous prime is 130023407. The next prime is 130023431. The reversal of 130023412 is 214320031.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6280036 + 123743376 = 2506^2 + 11124^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157962 + ... + 158782.

It is an arithmetic number, because the mean of its divisors is an integer number (6771499).

Almost surely, 2130023412 is an apocalyptic number.

It is an amenable number.

130023412 is a deficient number, since it is larger than the sum of its proper divisors (113750552).

130023412 is a wasteful number, since it uses less digits than its factorization.

130023412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 130023412 is about 11402.7808888885. The cubic root of 130023412 is about 506.6101104539.

Adding to 130023412 its reverse (214320031), we get a palindrome (344343443).

The spelling of 130023412 in words is "one hundred thirty million, twenty-three thousand, four hundred twelve".

Divisors: 1 2 4 17 34 68 137 274 289 548 578 821 1156 1642 2329 3284 4658 9316 13957 27914 39593 55828 79186 112477 158372 224954 237269 449908 474538 949076 1912109 3824218 7648436 32505853 65011706 130023412