1223641452 has 24 divisors (see below), whose sum is σ = 3114724032. Its totient is φ = 370800400.

The previous prime is 1223641429. The next prime is 1223641481. The reversal of 1223641452 is 2541463221.

1223641452 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4634874 + ... + 4635137.

It is an arithmetic number, because the mean of its divisors is an integer number (129780168).

Almost surely, 2^1223641452 is an apocalyptic number.

1223641452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223641452 is an abundant number, since it is smaller than the sum of its proper divisors (1891082580).

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

1223641452 is a wasteful number, since it uses less digits than its factorization.

1223641452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9270029 (or 9270027 counting only the distinct ones).

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

The square root of 1223641452 is about 34980.5867875312. The cubic root of 1223641452 is about 1069.5917888507.

The spelling of 1223641452 in words is "one billion, two hundred twenty-three million, six hundred forty-one thousand, four hundred fifty-two".