2481780 has 96 divisors (see below), whose sum is σ = 8386560. Its totient is φ = 535680.

The previous prime is 2481757. The next prime is 2481797. The reversal of 2481780 is 871842.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7825 + ... + 8135.

It is an arithmetic number, because the mean of its divisors is an integer number (87360).

2^2481780 is an apocalyptic number.

2481780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2481780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4193280).

2481780 is an abundant number, since it is smaller than the sum of its proper divisors (5904780).

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

2481780 is a wasteful number, since it uses less digits than its factorization.

2481780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 2481780 is about 1575.3666239958. The cubic root of 2481780 is about 135.3903653324.

The spelling of 2481780 in words is "two million, four hundred eighty-one thousand, seven hundred eighty".