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23254820 = 2251162741
BaseRepresentation
bin101100010110…
…1011100100100
31121202110121122
41120231130210
521423123240
62150233112
7401443211
oct130553444
947673548
1023254820
1112143766
127955798
134a82a64
143134b08
1520954b5
hex162d724

23254820 has 12 divisors (see below), whose sum is σ = 48835164. Its totient is φ = 9301920.

The previous prime is 23254799. The next prime is 23254837. The reversal of 23254820 is 2845232.

It can be written as a sum of positive squares in 2 ways, for example, as 8631844 + 14622976 = 2938^2 + 3824^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23254820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581351 + ... + 581390.

It is an arithmetic number, because the mean of its divisors is an integer number (4069597).

Almost surely, 223254820 is an apocalyptic number.

23254820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23254820 is an abundant number, since it is smaller than the sum of its proper divisors (25580344).

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

23254820 is a wasteful number, since it uses less digits than its factorization.

23254820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162750 (or 1162748 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 23254820 is about 4822.3251653119. The cubic root of 23254820 is about 285.4330954959.

The spelling of 23254820 in words is "twenty-three million, two hundred fifty-four thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 1162741 2325482 4650964 5813705 11627410 23254820