128788533 has 12 divisors (see below), whose sum is σ = 188648928. Its totient is φ = 84649320.

The previous prime is 128788511. The next prime is 128788537. The reversal of 128788533 is 335887821.

It is not a de Polignac number, because 128788533 - 2⁵ = 128788501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128788537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100135 + ... + 101412.

It is an arithmetic number, because the mean of its divisors is an integer number (15720744).

Almost surely, 2^128788533 is an apocalyptic number.

It is an amenable number.

128788533 is a deficient number, since it is larger than the sum of its proper divisors (59860395).

128788533 is a wasteful number, since it uses less digits than its factorization.

128788533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201624 (or 201621 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 128788533 is about 11348.5035577384. The cubic root of 128788533 is about 505.0011868090.

The spelling of 128788533 in words is "one hundred twenty-eight million, seven hundred eighty-eight thousand, five hundred thirty-three".