1144422020 has 48 divisors (see below), whose sum is σ = 2785321728. Its totient is φ = 386843520.

The previous prime is 1144421977. The next prime is 1144422029. The reversal of 1144422020 is 202244411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1144421983 and 1144422001.

It is not an unprimeable number, because it can be changed into a prime (1144422029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47627 + ... + 67506.

It is an arithmetic number, because the mean of its divisors is an integer number (58027536).

Almost surely, 2^1144422020 is an apocalyptic number.

1144422020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144422020 is an abundant number, since it is smaller than the sum of its proper divisors (1640899708).

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

1144422020 is a wasteful number, since it uses less digits than its factorization.

1144422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115220 (or 115218 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1144422020 is about 33829.3071167590. The cubic root of 1144422020 is about 1045.9928965002.

Adding to 1144422020 its reverse (202244411), we get a palindrome (1346666431).

The spelling of 1144422020 in words is "one billion, one hundred forty-four million, four hundred twenty-two thousand, twenty".