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253728501 = 3136505859
BaseRepresentation
bin11110001111110…
…01011011110101
3122200102202001220
433013321123311
51004423303001
641102140553
76200441145
oct1707713365
9580382056
10253728501
1112024aa84
1270b81759
1340749810
14259aa925
151741dc36
hexf1f96f5

253728501 has 8 divisors (see below), whose sum is σ = 364328160. Its totient is φ = 156140592.

The previous prime is 253728469. The next prime is 253728557. The reversal of 253728501 is 105827352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253728501 - 25 = 253728469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253728581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252891 + ... + 3252968.

It is an arithmetic number, because the mean of its divisors is an integer number (45541020).

Almost surely, 2253728501 is an apocalyptic number.

It is an amenable number.

253728501 is a deficient number, since it is larger than the sum of its proper divisors (110599659).

253728501 is a wasteful number, since it uses less digits than its factorization.

253728501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505875.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 253728501 is about 15928.8574919860. The cubic root of 253728501 is about 633.0768283220.

The spelling of 253728501 in words is "two hundred fifty-three million, seven hundred twenty-eight thousand, five hundred one".

Divisors: 1 3 13 39 6505859 19517577 84576167 253728501