Search a number
-
+
83948081 = 711992583
BaseRepresentation
bin1010000000011…
…11001000110001
312211222000010012
411000033020301
5132442314311
612155144305
72036355410
oct500171061
9184860105
1083948081
1143428488
1224145095
1314513429
14b213477
15758378b
hex500f231

83948081 has 4 divisors (see below), whose sum is σ = 95940672. Its totient is φ = 71955492.

The previous prime is 83948041. The next prime is 83948087. The reversal of 83948081 is 18084938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 83948081 - 210 = 83947057 is a prime.

It is a super-2 number, since 2×839480812 = 14094560607165122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83948087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5996285 + ... + 5996298.

It is an arithmetic number, because the mean of its divisors is an integer number (23985168).

Almost surely, 283948081 is an apocalyptic number.

It is an amenable number.

83948081 is a deficient number, since it is larger than the sum of its proper divisors (11992591).

83948081 is a wasteful number, since it uses less digits than its factorization.

83948081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11992590.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 83948081 is about 9162.3185384487. The cubic root of 83948081 is about 437.8616651329.

The spelling of 83948081 in words is "eighty-three million, nine hundred forty-eight thousand, eighty-one".

Divisors: 1 7 11992583 83948081