4011280 has 160 divisors (see below), whose sum is σ = 12499200. Its totient is φ = 1161216.

The previous prime is 4011263. The next prime is 4011283. The reversal of 4011280 is 821104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (4011283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138306 + ... + 138334.

It is an arithmetic number, because the mean of its divisors is an integer number (78120).

Almost surely, 2^4011280 is an apocalyptic number.

4011280 is a gapful number since it is divisible by the number (40) 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 4011280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6249600).

4011280 is an abundant number, since it is smaller than the sum of its proper divisors (8487920).

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

4011280 is a wasteful number, since it uses less digits than its factorization.

4011280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 4011280 is about 2002.8180146983. The cubic root of 4011280 is about 158.8891808523.

Adding to 4011280 its reverse (821104), we get a palindrome (4832384).

It can be divided in two parts, 401 and 1280, that added together give a square (1681 = 41²).

The spelling of 4011280 in words is "four million, eleven thousand, two hundred eighty".