87728503 has 2 divisors, whose sum is σ = 87728504. Its totient is φ = 87728502.

The previous prime is 87728497. The next prime is 87728507. The reversal of 87728503 is 30582778.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87728503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87728507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43864251 + 43864252.

It is an arithmetic number, because the mean of its divisors is an integer number (43864252).

Almost surely, 2^87728503 is an apocalyptic number.

87728503 is a deficient number, since it is larger than the sum of its proper divisors (1).

87728503 is an equidigital number, since it uses as much as digits as its factorization.

87728503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 87728503 is about 9366.3495023408. The cubic root of 87728503 is about 444.3381196747.

The spelling of 87728503 in words is "eighty-seven million, seven hundred twenty-eight thousand, five hundred three".