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72006190 = 257200619
BaseRepresentation
bin1000100101010…
…11101000101110
312000111021220221
410102223220232
5121413144230
611051201554
71533020404
oct422535056
9160437827
1072006190
1137711353
12201462ba
1311bc1a19
1497c5474
1564c527a
hex44aba2e

72006190 has 8 divisors (see below), whose sum is σ = 129611160. Its totient is φ = 28802472.

The previous prime is 72006157. The next prime is 72006191. The reversal of 72006190 is 9160027.

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

It is a super-2 number, since 2×720061902 = 10369782796632200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72006191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3600300 + ... + 3600319.

It is an arithmetic number, because the mean of its divisors is an integer number (16201395).

Almost surely, 272006190 is an apocalyptic number.

72006190 is a deficient number, since it is larger than the sum of its proper divisors (57604970).

72006190 is a wasteful number, since it uses less digits than its factorization.

72006190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200626.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 72006190 is about 8485.6461156473. The cubic root of 72006190 is about 416.0286862307.

The spelling of 72006190 in words is "seventy-two million, six thousand, one hundred ninety".

Divisors: 1 2 5 10 7200619 14401238 36003095 72006190