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87403070401 = 530916463189
BaseRepresentation
bin101000101100110100…
…0010000001111000001
322100121021022000102121
41101121220100033001
52413000141223101
6104052531044241
76212633561143
oct1213150201701
9270537260377
1087403070401
1134081833489
1214b33140681
13831bab5a4a
144332058c93
1524183a60a1
hex1459a103c1

87403070401 has 4 divisors (see below), whose sum is σ = 87419538900. Its totient is φ = 87386601904.

The previous prime is 87403070399. The next prime is 87403070453. The reversal of 87403070401 is 10407030478.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43187074225 + 44215996176 = 207815^2 + 210276^2 .

It is a cyclic number.

It is not a de Polignac number, because 87403070401 - 21 = 87403070399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87403070801) 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, 8226286 + ... + 8236903.

It is an arithmetic number, because the mean of its divisors is an integer number (21854884725).

Almost surely, 287403070401 is an apocalyptic number.

It is an amenable number.

87403070401 is a deficient number, since it is larger than the sum of its proper divisors (16468499).

87403070401 is a wasteful number, since it uses less digits than its factorization.

87403070401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16468498.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 87403070401 in words is "eighty-seven billion, four hundred three million, seventy thousand, four hundred one".

Divisors: 1 5309 16463189 87403070401