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23046140 = 22513137647
BaseRepresentation
bin101011111101…
…0011111111100
31121100212100202
41113322133330
521344434030
62141543032
7366613625
oct127723774
947325322
1023046140
11120109a7
127874a78
134a0ba90
1430bca4c
152053745
hex15fa7fc

23046140 has 48 divisors (see below), whose sum is σ = 52581312. Its totient is φ = 8434176.

The previous prime is 23046137. The next prime is 23046181. The reversal of 23046140 is 4164032.

It is a happy number.

It is a super-2 number, since 2×230461402 = 1062249137799200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 35297 + ... + 35943.

It is an arithmetic number, because the mean of its divisors is an integer number (1095444).

Almost surely, 223046140 is an apocalyptic number.

23046140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23046140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26290656).

23046140 is an abundant number, since it is smaller than the sum of its proper divisors (29535172).

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

23046140 is a wasteful number, since it uses less digits than its factorization.

23046140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23046140 is about 4800.6395407279. The cubic root of 23046140 is about 284.5767391106.

The spelling of 23046140 in words is "twenty-three million, forty-six thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 137 260 274 548 647 685 1294 1370 1781 2588 2740 3235 3562 6470 7124 8411 8905 12940 16822 17810 33644 35620 42055 84110 88639 168220 177278 354556 443195 886390 1152307 1772780 2304614 4609228 5761535 11523070 23046140