2003521416 has 64 divisors (see below), whose sum is σ = 5525694720. Its totient is φ = 601428480.

The previous prime is 2003521391. The next prime is 2003521433. The reversal of 2003521416 is 6141253002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65520 + ... + 91103.

It is an arithmetic number, because the mean of its divisors is an integer number (86338980).

Almost surely, 2^2003521416 is an apocalyptic number.

2003521416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2003521416 is an abundant number, since it is smaller than the sum of its proper divisors (3522173304).

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

2003521416 is a wasteful number, since it uses less digits than its factorization.

2003521416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156686 (or 156682 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2003521416 is about 44760.7128629561. The cubic root of 2003521416 is about 1260.6600673571.

Adding to 2003521416 its reverse (6141253002), we get a palindrome (8144774418).

The spelling of 2003521416 in words is "two billion, three million, five hundred twenty-one thousand, four hundred sixteen".