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72868795 = 514573759
BaseRepresentation
bin1000101011111…
…10001110111011
312002010010012021
410111332032323
5122123300140
611121455311
71543242316
oct425761673
9162103167
1072868795
113815044a
12204a1537
131213453c
14996b97d
1565e5b4a
hex457e3bb

72868795 has 4 divisors (see below), whose sum is σ = 87442560. Its totient is φ = 58295032.

The previous prime is 72868787. The next prime is 72868801. The reversal of 72868795 is 59786827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59786827 = 109548503.

It is a cyclic number.

It is not a de Polignac number, because 72868795 - 23 = 72868787 is a prime.

It is a super-2 number, since 2×728687952 = 10619722569504050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7286875 + ... + 7286884.

It is an arithmetic number, because the mean of its divisors is an integer number (21860640).

Almost surely, 272868795 is an apocalyptic number.

72868795 is a deficient number, since it is larger than the sum of its proper divisors (14573765).

72868795 is a wasteful number, since it uses less digits than its factorization.

72868795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14573764.

The product of its digits is 1693440, while the sum is 52.

The square root of 72868795 is about 8536.3221002959. The cubic root of 72868795 is about 417.6833812593.

The spelling of 72868795 in words is "seventy-two million, eight hundred sixty-eight thousand, seven hundred ninety-five".

Divisors: 1 5 14573759 72868795