2400780 has 24 divisors (see below), whose sum is σ = 6722352. Its totient is φ = 640192.

The previous prime is 2400779. The next prime is 2400793. The reversal of 2400780 is 870042.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19947 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (280098).

2^2400780 is an apocalyptic number.

2400780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2400780 is an abundant number, since it is smaller than the sum of its proper divisors (4321572).

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

2400780 is a wasteful number, since it uses less digits than its factorization.

2400780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40025 (or 40023 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 2400780 is about 1549.4450619496. The cubic root of 2400780 is about 133.9010928260.

The spelling of 2400780 in words is "two million, four hundred thousand, seven hundred eighty".