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23060145140 = 2252334948529
BaseRepresentation
bin10101011110011111…
…011110001111110100
32012112002201202012122
4111132133132033310
5334211344121030
614332122535112
71444310666564
oct253637361764
965462652178
1023060145140
11986393a39a
124576967498
13223668a1c6
14118a8a6da4
158ee7408e5
hex55e7de3f4

23060145140 has 24 divisors (see below), whose sum is σ = 48634152840. Its totient is φ = 9184467968.

The previous prime is 23060145139. The next prime is 23060145149. The reversal of 23060145140 is 4154106032.

It can be written as a sum of positive squares in 4 ways, for example, as 1026305296 + 22033839844 = 32036^2 + 148438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23060145149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2469605 + ... + 2478924.

It is an arithmetic number, because the mean of its divisors is an integer number (2026423035).

Almost surely, 223060145140 is an apocalyptic number.

23060145140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23060145140 is an abundant number, since it is smaller than the sum of its proper divisors (25574007700).

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

23060145140 is a wasteful number, since it uses less digits than its factorization.

23060145140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948771 (or 4948769 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 23060145140 in words is "twenty-three billion, sixty million, one hundred forty-five thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 233 466 932 1165 2330 4660 4948529 9897058 19794116 24742645 49485290 98970580 1153007257 2306014514 4612029028 5765036285 11530072570 23060145140