4040280 has 160 divisors (see below), whose sum is σ = 14374800. Its totient is φ = 1016064.

The previous prime is 4040279. The next prime is 4040287. The reversal of 4040280 is 820404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040287) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 93939 + ... + 93981.

Almost surely, 2^4040280 is an apocalyptic number.

4040280 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 4040280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7187400).

4040280 is an abundant number, since it is smaller than the sum of its proper divisors (10334520).

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

4040280 is a wasteful number, since it uses less digits than its factorization.

4040280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4040280 is about 2010.0447756207. The cubic root of 4040280 is about 159.2711641976.

Adding to 4040280 its reverse (820404), we get a palindrome (4860684).

The spelling of 4040280 in words is "four million, forty thousand, two hundred eighty".