87928147 has 2 divisors, whose sum is σ = 87928148. Its totient is φ = 87928146.

The previous prime is 87928133. The next prime is 87928153. The reversal of 87928147 is 74182978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87928147 - 2⁷ = 87928019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87928097 and 87928106.

It is not a weakly prime, because it can be changed into another prime (87928157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43964073 + 43964074.

It is an arithmetic number, because the mean of its divisors is an integer number (43964074).

Almost surely, 2^87928147 is an apocalyptic number.

87928147 is a deficient number, since it is larger than the sum of its proper divisors (1).

87928147 is an equidigital number, since it uses as much as digits as its factorization.

87928147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 46.

The square root of 87928147 is about 9377.0009597952. Note that the first 3 decimals coincide. The cubic root of 87928147 is about 444.6749248154.

The spelling of 87928147 in words is "eighty-seven million, nine hundred twenty-eight thousand, one hundred forty-seven".