1232720 has 40 divisors (see below), whose sum is σ = 3020640. Its totient is φ = 466560.

The previous prime is 1232719. The next prime is 1232771. The reversal of 1232720 is 272321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 1115 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (75516).

2^1232720 is an apocalyptic number.

1232720 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 1232720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510320).

1232720 is an abundant number, since it is smaller than the sum of its proper divisors (1787920).

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

1232720 is a wasteful number, since it uses less digits than its factorization.

1232720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1232720 is about 1110.2792441544. The cubic root of 1232720 is about 107.2230476917.

The spelling of 1232720 in words is "one million, two hundred thirty-two thousand, seven hundred twenty".