1144623450 has 72 divisors (see below), whose sum is σ = 2906921088. Its totient is φ = 298062240.

The previous prime is 1144623427. The next prime is 1144623499. The reversal of 1144623450 is 543264411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 275287 + ... + 279413.

It is an arithmetic number, because the mean of its divisors is an integer number (40373904).

Almost surely, 2^1144623450 is an apocalyptic number.

1144623450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1144623450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453460544).

1144623450 is an abundant number, since it is smaller than the sum of its proper divisors (1762297638).

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

1144623450 is a wasteful number, since it uses less digits than its factorization.

1144623450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1144623450 is about 33832.2841380833. The cubic root of 1144623450 is about 1046.0542613887.

Adding to 1144623450 its reverse (543264411), we get a palindrome (1687887861).

The spelling of 1144623450 in words is "one billion, one hundred forty-four million, six hundred twenty-three thousand, four hundred fifty".