1003894780 has 96 divisors (see below), whose sum is σ = 2447303040. Its totient is φ = 338826240.

The previous prime is 1003894757. The next prime is 1003894817. The reversal of 1003894780 is 874983001.

It is a super-2 number, since 2×1003894780² = 2015609458622496800, which contains 22 as substring.

It is a congruent number.

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, 4383706 + ... + 4383934.

It is an arithmetic number, because the mean of its divisors is an integer number (25492740).

Almost surely, 2^1003894780 is an apocalyptic number.

1003894780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1003894780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223651520).

1003894780 is an abundant number, since it is smaller than the sum of its proper divisors (1443408260).

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

1003894780 is a wasteful number, since it uses less digits than its factorization.

1003894780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1003894780 is about 31684.2986351284. The cubic root of 1003894780 is about 1001.2965781585.

The spelling of 1003894780 in words is "one billion, three million, eight hundred ninety-four thousand, seven hundred eighty".