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253472215 = 5306716529
BaseRepresentation
bin11110001101110…
…10110111010111
3122122221201111211
433012322313113
51004342102330
641052442251
76165323023
oct1706726727
9578851454
10253472215
11120095477
1270a79387
1340689c79
1425941383
15173bcd2a
hexf1badd7

253472215 has 8 divisors (see below), whose sum is σ = 304284240. Its totient is φ = 202699392.

The previous prime is 253472207. The next prime is 253472239. The reversal of 253472215 is 512274352.

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

It is a cyclic number.

It is not a de Polignac number, because 253472215 - 23 = 253472207 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 7071 + ... + 23599.

It is an arithmetic number, because the mean of its divisors is an integer number (38035530).

Almost surely, 2253472215 is an apocalyptic number.

253472215 is a deficient number, since it is larger than the sum of its proper divisors (50812025).

253472215 is a wasteful number, since it uses less digits than its factorization.

253472215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19601.

The product of its digits is 16800, while the sum is 31.

The square root of 253472215 is about 15920.8107519686. The cubic root of 253472215 is about 632.8636038371.

The spelling of 253472215 in words is "two hundred fifty-three million, four hundred seventy-two thousand, two hundred fifteen".

Divisors: 1 5 3067 15335 16529 82645 50694443 253472215