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253842580 = 22512692129
BaseRepresentation
bin11110010000101…
…01010010010100
3122200122112120001
433020111102110
51004440430310
641104421044
76201424555
oct1710252224
9580575501
10253842580
11120318762
1271017784
1340789714
14259da32c
151744293a
hexf215494

253842580 has 12 divisors (see below), whose sum is σ = 533069460. Its totient is φ = 101537024.

The previous prime is 253842571. The next prime is 253842583. The reversal of 253842580 is 85248352.

It can be written as a sum of positive squares in 2 ways, for example, as 50951044 + 202891536 = 7138^2 + 14244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253842583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6346045 + ... + 6346084.

It is an arithmetic number, because the mean of its divisors is an integer number (44422455).

Almost surely, 2253842580 is an apocalyptic number.

253842580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253842580 is an abundant number, since it is smaller than the sum of its proper divisors (279226880).

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

253842580 is a wasteful number, since it uses less digits than its factorization.

253842580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12692138 (or 12692136 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 253842580 is about 15932.4379804222. The cubic root of 253842580 is about 633.1716934372.

The spelling of 253842580 in words is "two hundred fifty-three million, eight hundred forty-two thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 12692129 25384258 50768516 63460645 126921290 253842580