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39880633 = 138934469
BaseRepresentation
bin1001100000100…
…0011110111001
32210001010221111
42120020132321
540202140013
63542440321
7662660032
oct230103671
983033844
1039880633
1120569a01
12114330a1
138354410
145421a89
15377b73d
hex26087b9

39880633 has 8 divisors (see below), whose sum is σ = 43432200. Its totient is φ = 36398208.

The previous prime is 39880613. The next prime is 39880661. The reversal of 39880633 is 33608893.

It can be written as a sum of positive squares in 4 ways, for example, as 278784 + 39601849 = 528^2 + 6293^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-39880633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39880613) 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, 16078 + ... + 18391.

It is an arithmetic number, because the mean of its divisors is an integer number (5429025).

Almost surely, 239880633 is an apocalyptic number.

It is an amenable number.

39880633 is a deficient number, since it is larger than the sum of its proper divisors (3551567).

39880633 is a wasteful number, since it uses less digits than its factorization.

39880633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34571.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 39880633 is about 6315.1114796178. Note that the first 3 decimals coincide. The cubic root of 39880633 is about 341.6546592118.

The spelling of 39880633 in words is "thirty-nine million, eight hundred eighty thousand, six hundred thirty-three".

Divisors: 1 13 89 1157 34469 448097 3067741 39880633