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BaseRepresentation
bin1000100110111…
…01011010110101
312000212122122012
410103131122311
5121441210401
611055414005
71534530035
oct423353265
9160778565
1072210101
1137840577
1220224305
1311c63792
1498398c5
1565158bb
hex44dd6b5

72210101 has 8 divisors (see below), whose sum is σ = 76546944. Its totient is φ = 67883200.

The previous prime is 72210077. The next prime is 72210137. The reversal of 72210101 is 10101227.

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 72210101 - 214 = 72193717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72210181) 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, 16826 + ... + 20676.

It is an arithmetic number, because the mean of its divisors is an integer number (9568368).

Almost surely, 272210101 is an apocalyptic number.

It is an amenable number.

72210101 is a deficient number, since it is larger than the sum of its proper divisors (4336843).

72210101 is a wasteful number, since it uses less digits than its factorization.

72210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 72210101 is about 8497.6526758864. The cubic root of 72210101 is about 416.4210269129.

Adding to 72210101 its reverse (10101227), we get a palindrome (82311328).

The spelling of 72210101 in words is "seventy-two million, two hundred ten thousand, one hundred one".

Divisors: 1 17 1103 3851 18751 65467 4247653 72210101