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23550980 = 2251177549
BaseRepresentation
bin101100111010…
…1110000000100
31122022111212112
41121311300010
522012112410
62200440152
7404115515
oct131656004
948274775
1023550980
1112326222
127a79058
134b577bb
1431b0a0c
152103105
hex1675c04

23550980 has 12 divisors (see below), whose sum is σ = 49457100. Its totient is φ = 9420384.

The previous prime is 23550973. The next prime is 23551019. The reversal of 23550980 is 8905532.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18524416 + 5026564 = 4304^2 + 2242^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588755 + ... + 588794.

It is an arithmetic number, because the mean of its divisors is an integer number (4121425).

Almost surely, 223550980 is an apocalyptic number.

23550980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23550980 is an abundant number, since it is smaller than the sum of its proper divisors (25906120).

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

23550980 is a wasteful number, since it uses less digits than its factorization.

23550980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177558 (or 1177556 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 23550980 is about 4852.9351942922. The cubic root of 23550980 is about 286.6396915907.

It can be divided in two parts, 235 and 50980, that added together give a palindrome (51215).

The spelling of 23550980 in words is "twenty-three million, five hundred fifty thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1177549 2355098 4710196 5887745 11775490 23550980