1224534864 has 160 divisors (see below), whose sum is σ = 3743760384. Its totient is φ = 337628160.

The previous prime is 1224534859. The next prime is 1224534901. The reversal of 1224534864 is 4684354221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1418497 + ... + 1419359.

Almost surely, 2^1224534864 is an apocalyptic number.

1224534864 is a gapful number since it is divisible by the number (14) 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 1224534864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871880192).

1224534864 is an abundant number, since it is smaller than the sum of its proper divisors (2519225520).

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

1224534864 is a wasteful number, since it uses less digits than its factorization.

1224534864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1019 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 1224534864 is about 34993.3545691178. The cubic root of 1224534864 is about 1069.8520376531.

The spelling of 1224534864 in words is "one billion, two hundred twenty-four million, five hundred thirty-four thousand, eight hundred sixty-four".