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87406804075 = 5231831358831
BaseRepresentation
bin101000101100111011…
…0011111110001101011
322100121112022201001211
41101121312133301223
52413002120212300
6104053143053551
76213010401403
oct1213166376153
9270545281054
1087406804075
1134083953668
1214b344412b7
13831c7c2316
14433274b803
1524188924ba
hex1459d9fc6b

87406804075 has 24 divisors (see below), whose sum is σ = 113228752896. Its totient is φ = 66854436000.

The previous prime is 87406804061. The next prime is 87406804091. The reversal of 87406804075 is 57040860478.

It is a happy number.

It is not a de Polignac number, because 87406804075 - 221 = 87404706923 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615091 + ... + 743740.

It is an arithmetic number, because the mean of its divisors is an integer number (4717864704).

Almost surely, 287406804075 is an apocalyptic number.

87406804075 is a deficient number, since it is larger than the sum of its proper divisors (25821948821).

87406804075 is a wasteful number, since it uses less digits than its factorization.

87406804075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358955 (or 1358950 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 87406804075 in words is "eighty-seven billion, four hundred six million, eight hundred four thousand, seventy-five".

Divisors: 1 5 25 31 83 155 415 775 2075 2573 12865 64325 1358831 6794155 33970775 42123761 112782973 210618805 563914865 1053094025 2819574325 3496272163 17481360815 87406804075