2402020440 has 128 divisors (see below), whose sum is σ = 8477784000. Its totient is φ = 602855424.

The previous prime is 2402020429. The next prime is 2402020447. The reversal of 2402020440 is 440202042.

2402020440 is a `hidden beast` number, since 24 + 0 + 202 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402020447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47055 + ... + 83774.

Almost surely, 2^2402020440 is an apocalyptic number.

2402020440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2402020440 is an abundant number, since it is smaller than the sum of its proper divisors (6075763560).

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

2402020440 is a wasteful number, since it uses less digits than its factorization.

2402020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130866 (or 130856 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2402020440 is about 49010.4115469356. The cubic root of 2402020440 is about 1339.2415028697.

Adding to 2402020440 its reverse (440202042), we get a palindrome (2842222482).

The spelling of 2402020440 in words is "two billion, four hundred two million, twenty thousand, four hundred forty".