2420403440 has 80 divisors (see below), whose sum is σ = 6926098368. Its totient is φ = 766015488.

The previous prime is 2420403431. The next prime is 2420403443. The reversal of 2420403440 is 443040242.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420403443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158957 + ... + 173516.

Almost surely, 2^2420403440 is an apocalyptic number.

2420403440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2420403440 is an abundant number, since it is smaller than the sum of its proper divisors (4505694928).

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

2420403440 is a wasteful number, since it uses less digits than its factorization.

2420403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332506 (or 332500 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 2420403440 is about 49197.5958762214. The cubic root of 2420403440 is about 1342.6492919801.

Adding to 2420403440 its reverse (443040242), we get a palindrome (2863443682).

The spelling of 2420403440 in words is "two billion, four hundred twenty million, four hundred three thousand, four hundred forty".