87286445 has 4 divisors (see below), whose sum is σ = 104743740. Its totient is φ = 69829152.

The previous prime is 87286439. The next prime is 87286447. The reversal of 87286445 is 54468278.

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 11195716 + 76090729 = 3346^2 + 8723^2 .

It is a cyclic number.

It is not a de Polignac number, because 87286445 - 2⁸ = 87286189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87286396 and 87286405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87286447) 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, 8728640 + ... + 8728649.

It is an arithmetic number, because the mean of its divisors is an integer number (26185935).

Almost surely, 2^87286445 is an apocalyptic number.

It is an amenable number.

87286445 is a deficient number, since it is larger than the sum of its proper divisors (17457295).

87286445 is a wasteful number, since it uses less digits than its factorization.

87286445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17457294.

The product of its digits is 430080, while the sum is 44.

The square root of 87286445 is about 9342.7214985785. The cubic root of 87286445 is about 443.5905326625.

The spelling of 87286445 in words is "eighty-seven million, two hundred eighty-six thousand, four hundred forty-five".