3822780 has 96 divisors (see below), whose sum is σ = 11995200. Its totient is φ = 908544.

The previous prime is 3822779. The next prime is 3822811. The reversal of 3822780 is 872283.

It is a super-2 number, since 2×3822780² = 29227293856800, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 131806 + ... + 131834.

It is an arithmetic number, because the mean of its divisors is an integer number (124950).

Almost surely, 2^3822780 is an apocalyptic number.

3822780 is a gapful number since it is divisible by the number (30) 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 3822780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5997600).

3822780 is an abundant number, since it is smaller than the sum of its proper divisors (8172420).

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

3822780 is a wasteful number, since it uses less digits than its factorization.

3822780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3822780 is about 1955.1930850942. The cubic root of 3822780 is about 156.3602784159.

The spelling of 3822780 in words is "three million, eight hundred twenty-two thousand, seven hundred eighty".