4022780 has 12 divisors (see below), whose sum is σ = 8447880. Its totient is φ = 1609104.

The previous prime is 4022773. The next prime is 4022783. The reversal of 4022780 is 872204.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100550 + ... + 100589.

It is an arithmetic number, because the mean of its divisors is an integer number (703990).

Almost surely, 2^4022780 is an apocalyptic number.

It is an amenable number.

4022780 is an abundant number, since it is smaller than the sum of its proper divisors (4425100).

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

4022780 is a wasteful number, since it uses less digits than its factorization.

4022780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201148 (or 201146 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 4022780 is about 2005.6869147502. The cubic root of 4022780 is about 159.0408765860.

Adding to 4022780 its reverse (872204), we get a palindrome (4894984).

The spelling of 4022780 in words is "four million, twenty-two thousand, seven hundred eighty".