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253802740 = 22534736571
BaseRepresentation
bin11110010000010…
…11100011110100
3122200120111220111
433020023203310
51004433141430
641103512404
76201200452
oct1710134364
9580514814
10253802740
111202a0834
1270bb8704
1340774549
14259c99d2
1517435c2a
hexf20b8f4

253802740 has 24 divisors (see below), whose sum is σ = 534536352. Its totient is φ = 101225760.

The previous prime is 253802737. The next prime is 253802749. The reversal of 253802740 is 47208352.

253802740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253802749) 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, 11346 + ... + 25225.

It is an arithmetic number, because the mean of its divisors is an integer number (22272348).

Almost surely, 2253802740 is an apocalyptic number.

253802740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253802740 is an abundant number, since it is smaller than the sum of its proper divisors (280733612).

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

253802740 is a wasteful number, since it uses less digits than its factorization.

253802740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36927 (or 36925 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 253802740 is about 15931.1876518984. The cubic root of 253802740 is about 633.1385667647.

The spelling of 253802740 in words is "two hundred fifty-three million, eight hundred two thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 347 694 1388 1735 3470 6940 36571 73142 146284 182855 365710 731420 12690137 25380274 50760548 63450685 126901370 253802740