2400020780 has 24 divisors (see below), whose sum is σ = 5042323440. Its totient is φ = 959574080.

The previous prime is 2400020743. The next prime is 2400020789. The reversal of 2400020780 is 870200042.

It is not an unprimeable number, because it can be changed into a prime (2400020789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20195 + ... + 72165.

It is an arithmetic number, because the mean of its divisors is an integer number (210096810).

Almost surely, 2^2400020780 is an apocalyptic number.

2400020780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2400020780 is an abundant number, since it is smaller than the sum of its proper divisors (2642302660).

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

2400020780 is a wasteful number, since it uses less digits than its factorization.

2400020780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54289 (or 54287 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2400020780 is about 48990.0069401914. The cubic root of 2400020780 is about 1338.8697642689.

The spelling of 2400020780 in words is "two billion, four hundred million, twenty thousand, seven hundred eighty".