Search a number
-
+
80648421 = 373840401
BaseRepresentation
bin1001100111010…
…01100011100101
312121202100211120
410303221203211
5131121222141
612000324153
71666333410
oct463514345
9177670746
1080648421
1141584397
1223013659
1313929579
14a9d4b77
157130c66
hex4ce98e5

80648421 has 8 divisors (see below), whose sum is σ = 122892864. Its totient is φ = 46084800.

The previous prime is 80648417. The next prime is 80648423. The reversal of 80648421 is 12484608.

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

It is not a de Polignac number, because 80648421 - 22 = 80648417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80648423) 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, 1920180 + ... + 1920221.

It is an arithmetic number, because the mean of its divisors is an integer number (15361608).

Almost surely, 280648421 is an apocalyptic number.

It is an amenable number.

80648421 is a deficient number, since it is larger than the sum of its proper divisors (42244443).

80648421 is a wasteful number, since it uses less digits than its factorization.

80648421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840411.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 80648421 is about 8980.4465924585. The cubic root of 80648421 is about 432.0479574246.

The spelling of 80648421 in words is "eighty million, six hundred forty-eight thousand, four hundred twenty-one".

Divisors: 1 3 7 21 3840401 11521203 26882807 80648421