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76216217 = 7211141403
BaseRepresentation
bin1001000101011…
…11011110011001
312022102011222212
410202233132121
5124002404332
611321324505
71613553500
oct442573631
9168364885
1076216217
113a027410
1221636735
1312a3706c
14a19d837
156a578b2
hex48af799

76216217 has 12 divisors (see below), whose sum is σ = 96720336. Its totient is φ = 59388840.

The previous prime is 76216213. The next prime is 76216223. The reversal of 76216217 is 71261267.

It is not a de Polignac number, because 76216217 - 22 = 76216213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76216211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70163 + ... + 71240.

It is an arithmetic number, because the mean of its divisors is an integer number (8060028).

Almost surely, 276216217 is an apocalyptic number.

76216217 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

76216217 is a deficient number, since it is larger than the sum of its proper divisors (20504119).

76216217 is a wasteful number, since it uses less digits than its factorization.

76216217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141428 (or 141421 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 76216217 is about 8730.1899750235. The cubic root of 76216217 is about 423.9836697905.

The spelling of 76216217 in words is "seventy-six million, two hundred sixteen thousand, two hundred seventeen".

Divisors: 1 7 11 49 77 539 141403 989821 1555433 6928747 10888031 76216217