2403438660 has 144 divisors (see below), whose sum is σ = 8396099712. Its totient is φ = 545126400.

The previous prime is 2403438643. The next prime is 2403438683. The reversal of 2403438660 is 668343042.

It is a happy number.

2403438660 is a `hidden beast` number, since 240 + 34 + 386 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157780 + ... + 172340.

It is an arithmetic number, because the mean of its divisors is an integer number (58306248).

Almost surely, 2^2403438660 is an apocalyptic number.

2403438660 is a gapful number since it is divisible by the number (20) 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 2403438660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4198049856).

2403438660 is an abundant number, since it is smaller than the sum of its proper divisors (5992661052).

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

2403438660 is a wasteful number, since it uses less digits than its factorization.

2403438660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14714 (or 14709 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 2403438660 is about 49024.8779702714. The cubic root of 2403438660 is about 1339.5050262169.

The spelling of 2403438660 in words is "two billion, four hundred three million, four hundred thirty-eight thousand, six hundred sixty".