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72075886 = 2172119879
BaseRepresentation
bin1000100101111…
…00101001101110
312000121211112021
410102330221232
5121422412021
611052500354
71533430531
oct422745156
9160554467
1072075886
1137759753
122017a6ba
1311c1766c
149802a18
1564dac41
hex44bca6e

72075886 has 8 divisors (see below), whose sum is σ = 114473520. Its totient is φ = 33918048.

The previous prime is 72075851. The next prime is 72075917. The reversal of 72075886 is 68857027.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059906 + ... + 1059973.

It is an arithmetic number, because the mean of its divisors is an integer number (14309190).

Almost surely, 272075886 is an apocalyptic number.

72075886 is a deficient number, since it is larger than the sum of its proper divisors (42397634).

72075886 is a wasteful number, since it uses less digits than its factorization.

72075886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119898.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 72075886 is about 8489.7518220499. The cubic root of 72075886 is about 416.1628699967.

The spelling of 72075886 in words is "seventy-two million, seventy-five thousand, eight hundred eighty-six".

Divisors: 1 2 17 34 2119879 4239758 36037943 72075886