128503948 has 12 divisors (see below), whose sum is σ = 225421560. Its totient is φ = 64097792.

The previous prime is 128503937. The next prime is 128503957. The reversal of 128503948 is 849305821.

It is a self number, because there is not a number n which added to its sum of digits gives 128503948.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36661 + ... + 40012.

It is an arithmetic number, because the mean of its divisors is an integer number (18785130).

Almost surely, 2^128503948 is an apocalyptic number.

It is an amenable number.

128503948 is a deficient number, since it is larger than the sum of its proper divisors (96917612).

128503948 is a wasteful number, since it uses less digits than its factorization.

128503948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77096 (or 77094 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 128503948 is about 11335.9581862320. The cubic root of 128503948 is about 504.6289441718.

The spelling of 128503948 in words is "one hundred twenty-eight million, five hundred three thousand, nine hundred forty-eight".