2445780 has 24 divisors (see below), whose sum is σ = 6848352. Its totient is φ = 652192.

The previous prime is 2445769. The next prime is 2445799. The reversal of 2445780 is 875442.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20322 + ... + 20441.

It is an arithmetic number, because the mean of its divisors is an integer number (285348).

2^2445780 is an apocalyptic number.

2445780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2445780 is an abundant number, since it is smaller than the sum of its proper divisors (4402572).

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

2445780 is a wasteful number, since it uses less digits than its factorization.

2445780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40775 (or 40773 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 2445780 is about 1563.8989737192. The cubic root of 2445780 is about 134.7325294051.

The spelling of 2445780 in words is "two million, four hundred forty-five thousand, seven hundred eighty".