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253426980 = 22354223783
BaseRepresentation
bin11110001101011…
…11110100100100
3122122212102110110
433012233310210
51004334130410
641051453020
76165044112
oct1706576444
9578772413
10253426980
11120064494
1270a57170
13406724c1
142592cab2
15173ae720
hexf1afd24

253426980 has 24 divisors (see below), whose sum is σ = 709595712. Its totient is φ = 67580512.

The previous prime is 253426933. The next prime is 253426981. The reversal of 253426980 is 89624352.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (253426981) 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, 2111832 + ... + 2111951.

It is an arithmetic number, because the mean of its divisors is an integer number (29566488).

Almost surely, 2253426980 is an apocalyptic number.

253426980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253426980 is an abundant number, since it is smaller than the sum of its proper divisors (456168732).

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

253426980 is a wasteful number, since it uses less digits than its factorization.

253426980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223795 (or 4223793 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 253426980 is about 15919.3900636928. The cubic root of 253426980 is about 632.8259543611.

The spelling of 253426980 in words is "two hundred fifty-three million, four hundred twenty-six thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 4223783 8447566 12671349 16895132 21118915 25342698 42237830 50685396 63356745 84475660 126713490 253426980