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23051140 = 2257229719
BaseRepresentation
bin101011111101…
…1101110000100
31121101010012221
41113323232010
521400114030
62142022124
7366634330
oct127735604
947333187
1023051140
1112014732
127877944
134a11138
1430c07c0
152054e7a
hex15fbb84

23051140 has 48 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 7857792.

The previous prime is 23051081. The next prime is 23051183. The reversal of 23051140 is 4115032.

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, 31701 + ... + 32419.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 223051140 is an apocalyptic number.

23051140 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 23051140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27820800).

23051140 is an abundant number, since it is smaller than the sum of its proper divisors (32590460).

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

23051140 is a wasteful number, since it uses less digits than its factorization.

23051140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 23051140 is about 4801.1602764332. The cubic root of 23051140 is about 284.5973178395.

Adding to 23051140 its reverse (4115032), we get a palindrome (27166172).

The spelling of 23051140 in words is "twenty-three million, fifty-one thousand, one hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 229 458 719 916 1145 1438 1603 2290 2876 3206 3595 4580 5033 6412 7190 8015 10066 14380 16030 20132 25165 32060 50330 100660 164651 329302 658604 823255 1152557 1646510 2305114 3293020 4610228 5762785 11525570 23051140