2400021404 has 24 divisors (see below), whose sum is σ = 4823011200. Its totient is φ = 1033501680.

The previous prime is 2400021397. The next prime is 2400021409. The reversal of 2400021404 is 4041200042.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400021409) 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 7 ways as a sum of consecutive naturals, for example, 1434584 + ... + 1436255.

It is an arithmetic number, because the mean of its divisors is an integer number (200958800).

Almost surely, 2^2400021404 is an apocalyptic number.

It is an amenable number.

2400021404 is an abundant number, since it is smaller than the sum of its proper divisors (2422989796).

2400021404 is a wasteful number, since it uses less digits than its factorization.

2400021404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870873 (or 2870871 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2400021404 is about 48990.0133088367. The cubic root of 2400021404 is about 1338.8698803033.

Adding to 2400021404 its reverse (4041200042), we get a palindrome (6441221446).

The spelling of 2400021404 in words is "two billion, four hundred million, twenty-one thousand, four hundred four".