2469780 has 36 divisors (see below), whose sum is σ = 7492212. Its totient is φ = 658560.

The previous prime is 2469757. The next prime is 2469781. The reversal of 2469780 is 879642.

It can be written as a sum of positive squares in 2 ways, for example, as 695556 + 1774224 = 834^2 + 1332^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2469781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6681 + ... + 7040.

It is an arithmetic number, because the mean of its divisors is an integer number (208117).

2^2469780 is an apocalyptic number.

2469780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2469780 is an abundant number, since it is smaller than the sum of its proper divisors (5022432).

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

2469780 is a wasteful number, since it uses less digits than its factorization.

2469780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13736 (or 13731 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2469780 is about 1571.5533716677. The cubic root of 2469780 is about 135.1717977425.

It can be divided in two parts, 2469 and 780, that added together give a square (3249 = 57²).

The spelling of 2469780 in words is "two million, four hundred sixty-nine thousand, seven hundred eighty".