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87796040 = 2352194901
BaseRepresentation
bin1010011101110…
…10100101001000
320010012111112012
411032322211020
5134433433130
612413435052
72114153063
oct516724510
9203174465
1087796040
1145616512
122549ba88
131525ca27
14b9358da
157a93995
hex53ba948

87796040 has 16 divisors (see below), whose sum is σ = 197541180. Its totient is φ = 35118400.

The previous prime is 87796013. The next prime is 87796057. The reversal of 87796040 is 4069778.

It can be written as a sum of positive squares in 2 ways, for example, as 87647044 + 148996 = 9362^2 + 386^2 .

It is a super-3 number, since 3×877960403 (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097411 + ... + 1097490.

Almost surely, 287796040 is an apocalyptic number.

It is an amenable number.

87796040 is an abundant number, since it is smaller than the sum of its proper divisors (109745140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87796040 is a wasteful number, since it uses less digits than its factorization.

87796040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194912 (or 2194908 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 87796040 is about 9369.9541087457. The cubic root of 87796040 is about 444.4521136640.

The spelling of 87796040 in words is "eighty-seven million, seven hundred ninety-six thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 2194901 4389802 8779604 10974505 17559208 21949010 43898020 87796040