128487051 has 48 divisors (see below), whose sum is σ = 237689088. Its totient is φ = 64929600.

The previous prime is 128487019. The next prime is 128487059. The reversal of 128487051 is 150784821.

128487051 is a `hidden beast` number, since 128 + 487 + 0 + 51 = 666.

It is not a de Polignac number, because 128487051 - 2⁵ = 128487019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128486997 and 128487015.

It is not an unprimeable number, because it can be changed into a prime (128487059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23136 + ... + 28146.

It is an arithmetic number, because the mean of its divisors is an integer number (4951856).

Almost surely, 2^128487051 is an apocalyptic number.

128487051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128487051 is a deficient number, since it is larger than the sum of its proper divisors (109202037).

128487051 is a wasteful number, since it uses less digits than its factorization.

128487051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072 (or 5069 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 128487051 is about 11335.2128784598. The cubic root of 128487051 is about 504.6068252949.

The spelling of 128487051 in words is "one hundred twenty-eight million, four hundred eighty-seven thousand, fifty-one".