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23287484 = 221117163191
BaseRepresentation
bin101100011010…
…1011010111100
31121211010102102
41120311122330
521430144414
62151044232
7401640353
oct130653274
947733372
1023287484
1112166260
127970678
134a9489c
14314299a
15209eede
hex16356bc

23287484 has 48 divisors (see below), whose sum is σ = 47609856. Its totient is φ = 9849600.

The previous prime is 23287457. The next prime is 23287487. The reversal of 23287484 is 48478232.

It is a happy number.

It is a super-2 number, since 2×232874842 = 1084613822100512, which contains 22 as substring.

Its product of digits (86016) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23287487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121829 + ... + 122019.

It is an arithmetic number, because the mean of its divisors is an integer number (991872).

Almost surely, 223287484 is an apocalyptic number.

It is an amenable number.

23287484 is an abundant number, since it is smaller than the sum of its proper divisors (24322372).

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

23287484 is a wasteful number, since it uses less digits than its factorization.

23287484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 384 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 23287484 is about 4825.7107248570. The cubic root of 23287484 is about 285.5666738936.

The spelling of 23287484 in words is "twenty-three million, two hundred eighty-seven thousand, four hundred eighty-four".

Divisors: 1 2 4 11 17 22 34 44 68 163 187 191 326 374 382 652 748 764 1793 2101 2771 3247 3586 4202 5542 6494 7172 8404 11084 12988 30481 31133 35717 60962 62266 71434 121924 124532 142868 342463 529261 684926 1058522 1369852 2117044 5821871 11643742 23287484