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23132472 = 2331187623
BaseRepresentation
bin101100000111…
…1100100111000
31121112020210020
41120033210320
521410214342
62143450440
7400423416
oct130174470
947466706
1023132472
111206a850
1278b6a20
134a3c16c
1431022b6
15206e0ec
hex160f938

23132472 has 32 divisors (see below), whose sum is σ = 63089280. Its totient is φ = 7009760.

The previous prime is 23132453. The next prime is 23132477. The reversal of 23132472 is 27423132.

It is a super-2 number, since 2×231324722 = 1070222521661568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43548 + ... + 44075.

It is an arithmetic number, because the mean of its divisors is an integer number (1971540).

Almost surely, 223132472 is an apocalyptic number.

23132472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23132472 is an abundant number, since it is smaller than the sum of its proper divisors (39956808).

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

23132472 is a wasteful number, since it uses less digits than its factorization.

23132472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87643 (or 87639 counting only the distinct ones).

The product of its digits is 2016, while the sum is 24.

The square root of 23132472 is about 4809.6228542371. The cubic root of 23132472 is about 284.9316425777.

The spelling of 23132472 in words is "twenty-three million, one hundred thirty-two thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 87623 175246 262869 350492 525738 700984 963853 1051476 1927706 2102952 2891559 3855412 5783118 7710824 11566236 23132472