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8240481 = 332391277
BaseRepresentation
bin11111011011110101100001
3120111122211000
4133123311201
54102143411
6452342213
7130020504
oct37336541
916448730
108240481
114719217
122914969
131926a32
14114713b
15acb956
hex7dbd61

8240481 has 16 divisors (see below), whose sum is σ = 12268800. Its totient is φ = 5466384.

The previous prime is 8240447. The next prime is 8240483. The reversal of 8240481 is 1840428.

It is not a de Polignac number, because 8240481 - 29 = 8239969 is a prime.

It is a super-2 number, since 2×82404812 = 135811054222722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8240483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5815 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (766800).

Almost surely, 28240481 is an apocalyptic number.

It is an amenable number.

8240481 is a deficient number, since it is larger than the sum of its proper divisors (4028319).

8240481 is a wasteful number, since it uses less digits than its factorization.

8240481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 8240481 is about 2870.6237998038. The cubic root of 8240481 is about 201.9842568523.

The spelling of 8240481 in words is "eight million, two hundred forty thousand, four hundred eighty-one".

Divisors: 1 3 9 27 239 717 1277 2151 3831 6453 11493 34479 305203 915609 2746827 8240481