1212832320 has 672 divisors, whose sum is σ = 5003596800. Its totient is φ = 246951936.

The previous prime is 1212832219. The next prime is 1212832349. The reversal of 1212832320 is 232382121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20556451 + ... + 20556509.

Almost surely, 2^1212832320 is an apocalyptic number.

1212832320 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 1212832320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2501798400).

1212832320 is an abundant number, since it is smaller than the sum of its proper divisors (3790764480).

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

1212832320 is a wasteful number, since it uses less digits than its factorization.

1212832320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1212832320 is about 34825.7422031462. The cubic root of 1212832320 is about 1066.4330286898.

The spelling of 1212832320 in words is "one billion, two hundred twelve million, eight hundred thirty-two thousand, three hundred twenty".