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72416189 = 401419431
BaseRepresentation
bin1000101000011…
…11101110111101
312001021010100002
410110033232331
5122014304224
611104044045
71536345626
oct424175675
9161233302
1072416189
113797139a
1220303625
1312006521
149890a4d
1565569ae
hex450fbbd

72416189 has 8 divisors (see below), whose sum is σ = 72938880. Its totient is φ = 71896000.

The previous prime is 72416177. The next prime is 72416203. The reversal of 72416189 is 98161427.

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 72416189 - 216 = 72350653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72416129) 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, 167804 + ... + 168234.

It is an arithmetic number, because the mean of its divisors is an integer number (9117360).

Almost surely, 272416189 is an apocalyptic number.

It is an amenable number.

72416189 is a deficient number, since it is larger than the sum of its proper divisors (522691).

72416189 is a wasteful number, since it uses less digits than its factorization.

72416189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

The product of its digits is 24192, while the sum is 38.

The square root of 72416189 is about 8509.7702084134. The cubic root of 72416189 is about 416.8168065505.

The spelling of 72416189 in words is "seventy-two million, four hundred sixteen thousand, one hundred eighty-nine".

Divisors: 1 401 419 431 168019 172831 180589 72416189