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72055873 = 314315393
BaseRepresentation
bin1000100101101…
…11110001000001
312000120211002001
410102313301001
5121421241443
611052224001
71533315301
oct422676101
9160524061
1072055873
113774570a
122016b001
1311c0b516
1497d9601
1564d4d4d
hex44b7c41

72055873 has 8 divisors (see below), whose sum is σ = 74566656. Its totient is φ = 69556800.

The previous prime is 72055787. The next prime is 72055889. The reversal of 72055873 is 37855027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-72055873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72055073) 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, 10665 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (9320832).

Almost surely, 272055873 is an apocalyptic number.

It is an amenable number.

72055873 is a deficient number, since it is larger than the sum of its proper divisors (2510783).

72055873 is a wasteful number, since it uses less digits than its factorization.

72055873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 72055873 is about 8488.5730838581. The cubic root of 72055873 is about 416.1243483821.

The spelling of 72055873 in words is "seventy-two million, fifty-five thousand, eight hundred seventy-three".

Divisors: 1 31 431 5393 13361 167183 2324383 72055873