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253232780 = 22522955291
BaseRepresentation
bin11110001100000…
…00011010001100
3122122111120001212
433012000122030
51004311422110
641043353552
76163304663
oct1706003214
9578446055
10253232780
1111aa41599
12709828b8
1340604ca8
14258bbdda
1517371e05
hexf18068c

253232780 has 24 divisors (see below), whose sum is σ = 534120720. Its totient is φ = 100848960.

The previous prime is 253232761. The next prime is 253232803. The reversal of 253232780 is 87232352.

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 7 ways as a sum of consecutive naturals, for example, 23066 + ... + 32225.

It is an arithmetic number, because the mean of its divisors is an integer number (22255030).

Almost surely, 2253232780 is an apocalyptic number.

253232780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253232780 is an abundant number, since it is smaller than the sum of its proper divisors (280887940).

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

253232780 is a wasteful number, since it uses less digits than its factorization.

253232780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55529 (or 55527 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 253232780 is about 15913.2894148256. The cubic root of 253232780 is about 632.6642691228.

The spelling of 253232780 in words is "two hundred fifty-three million, two hundred thirty-two thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 229 458 916 1145 2290 4580 55291 110582 221164 276455 552910 1105820 12661639 25323278 50646556 63308195 126616390 253232780