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72751 = 719547
BaseRepresentation
bin10001110000101111
310200210111
4101300233
54312001
61320451
7422050
oct216057
9120714
1072751
114a728
1236127
1327163
141c727
1516851
hex11c2f

72751 has 8 divisors (see below), whose sum is σ = 87680. Its totient is φ = 58968.

The previous prime is 72739. The next prime is 72763. The reversal of 72751 is 15727.

It is an interprime number because it is at equal distance from previous prime (72739) and next prime (72763).

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

It is not a de Polignac number, because 72751 - 25 = 72719 is a prime.

It is a Duffinian number.

72751 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72701) 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, 141 + ... + 406.

It is an arithmetic number, because the mean of its divisors is an integer number (10960).

272751 is an apocalyptic number.

72751 is a deficient number, since it is larger than the sum of its proper divisors (14929).

72751 is a wasteful number, since it uses less digits than its factorization.

72751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its digits is 490, while the sum is 22.

The square root of 72751 is about 269.7239329388. The cubic root of 72751 is about 41.7458193191.

The spelling of 72751 in words is "seventy-two thousand, seven hundred fifty-one".

Divisors: 1 7 19 133 547 3829 10393 72751