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741 = 31319
BaseRepresentation
bin1011100101
31000110
423211
510431
63233
72106
oct1345
91013
10741
11614
12519
13450
143ad
15346
hex2e5

741 has 8 divisors (see below), whose sum is σ = 1120. Its totient is φ = 432.

The previous prime is 739. The next prime is 743. The reversal of 741 is 147.

Subtracting from 741 its sum of digits (12), we obtain a 6-th power (729 = 36).

Adding to 741 its reverse (147), we get a palindrome (888).

741 is a nontrivial binomial coefficient, being equal to C(39, 2).

It is an interprime number because it is at equal distance from previous prime (739) and next prime (743).

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

It is not a de Polignac number, because 741 - 21 = 739 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

741 is a lucky number.

It is a straight-line number, since its digits are in arithmetic progression.

It is a plaindrome in base 8, base 14 and base 15.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743) 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, 30 + ... + 48.

It is an arithmetic number, because the mean of its divisors is an integer number (140).

741 is the 38-th triangular number.

It is an amenable number.

741 is a deficient number, since it is larger than the sum of its proper divisors (379).

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

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

The sum of its prime factors is 35.

The product of its digits is 28, while the sum is 12.

The square root of 741 is about 27.2213151776. The cubic root of 741 is about 9.0491142057.

The spelling of 741 in words is "seven hundred forty-one", and thus it is an aban number and an iban number.

Divisors: 1 3 13 19 39 57 247 741