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20000123120130 = 235976872894543
BaseRepresentation
bin1001000110000101001000…
…01110111110101000000010
32121210222210222010122201120
410203002210032332220002
510110140223004321010
6110311532453013110
74132650460356456
oct443024416765002
977728728118646
1020000123120130
11641100611000a
1222b01a8924196
13b21007960b9a
144d202274a666
1524a3b0aa5e70
hex1230a43bea02

20000123120130 has 32 divisors (see below), whose sum is σ = 48495143902464. Its totient is φ = 5278383008256.

The previous prime is 20000123120129. The next prime is 20000123120207. The reversal of 20000123120130 is 3102132100002.

It is a super-2 number, since 2×200001231201302 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3436444362 + ... + 3436450181.

It is an arithmetic number, because the mean of its divisors is an integer number (1515473246952).

Almost surely, 220000123120130 is an apocalyptic number.

20000123120130 is an abundant number, since it is smaller than the sum of its proper divisors (28495020782334).

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

20000123120130 is a wasteful number, since it uses less digits than its factorization.

20000123120130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872894650.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20000123120130 its reverse (3102132100002), we get a palindrome (23102255220132).

The spelling of 20000123120130 in words is "twenty trillion, one hundred twenty-three million, one hundred twenty thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 97 194 291 485 582 970 1455 2910 6872894543 13745789086 20618683629 34364472715 41237367258 68728945430 103093418145 206186836290 666670770671 1333341541342 2000012312013 3333353853355 4000024624026 6666707706710 10000061560065 20000123120130