1003128840 has 128 divisors (see below), whose sum is σ = 3821472000. Its totient is φ = 229284864.

The previous prime is 1003128829. The next prime is 1003128851. The reversal of 1003128840 is 488213001.

It is an interprime number because it is at equal distance from previous prime (1003128829) and next prime (1003128851).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58785 + ... + 73904.

It is an arithmetic number, because the mean of its divisors is an integer number (29855250).

Almost surely, 2^1003128840 is an apocalyptic number.

1003128840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003128840 is an abundant number, since it is smaller than the sum of its proper divisors (2818343160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1003128840 is a wasteful number, since it uses less digits than its factorization.

1003128840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132716 (or 132706 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1003128840 is about 31672.2092693263. The cubic root of 1003128840 is about 1001.0418608157.

The spelling of 1003128840 in words is "one billion, three million, one hundred twenty-eight thousand, eight hundred forty".