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87967241 = 372377493
BaseRepresentation
bin1010011111001…
…00011000001001
320010112012100222
411033210120021
5140004422431
612421235425
72115465155
oct517443011
9203465328
1087967241
11457230aa
1225562b75
13152bc92b
14b97c065
157ac957b
hex53e4609

87967241 has 4 divisors (see below), whose sum is σ = 90344772. Its totient is φ = 85589712.

The previous prime is 87967219. The next prime is 87967273. The reversal of 87967241 is 14276978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14276978 = 27138489.

It can be written as a sum of positive squares in 2 ways, for example, as 78943225 + 9024016 = 8885^2 + 3004^2 .

It is a cyclic number.

It is not a de Polignac number, because 87967241 - 26 = 87967177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87967192 and 87967201.

It is not an unprimeable number, because it can be changed into a prime (87967291) 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, 1188710 + ... + 1188783.

It is an arithmetic number, because the mean of its divisors is an integer number (22586193).

Almost surely, 287967241 is an apocalyptic number.

It is an amenable number.

87967241 is a deficient number, since it is larger than the sum of its proper divisors (2377531).

87967241 is a wasteful number, since it uses less digits than its factorization.

87967241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377530.

The product of its digits is 169344, while the sum is 44.

The square root of 87967241 is about 9379.0852965521. The cubic root of 87967241 is about 444.7408178062.

The spelling of 87967241 in words is "eighty-seven million, nine hundred sixty-seven thousand, two hundred forty-one".

Divisors: 1 37 2377493 87967241