1023244420 has 48 divisors (see below), whose sum is σ = 2354784768. Its totient is φ = 370402560.

The previous prime is 1023244393. The next prime is 1023244441. The reversal of 1023244420 is 244423201.

It is a happy number.

It is a super-2 number, since 2×1023244420² = 2094058286122272800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1023244391 and 1023244400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38632 + ... + 59488.

It is an arithmetic number, because the mean of its divisors is an integer number (49058016).

Almost surely, 2^1023244420 is an apocalyptic number.

1023244420 is a gapful number since it is divisible by the number (10) 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 1023244420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177392384).

1023244420 is an abundant number, since it is smaller than the sum of its proper divisors (1331540348).

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

1023244420 is a wasteful number, since it uses less digits than its factorization.

1023244420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21100 (or 21098 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1023244420 is about 31988.1918838812. The cubic root of 1023244420 is about 1007.6888697631.

Adding to 1023244420 its reverse (244423201), we get a palindrome (1267667621).

The spelling of 1023244420 in words is "one billion, twenty-three million, two hundred forty-four thousand, four hundred twenty".