1220432 has 20 divisors (see below), whose sum is σ = 2395680. Its totient is φ = 602208.

The previous prime is 1220423. The next prime is 1220437. The reversal of 1220432 is 2340221.

It is a super-3 number, since 3×1220432³ = 5453332948573384704, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (119784).

2^1220432 is an apocalyptic number.

It is an amenable number.

1220432 is a deficient number, since it is larger than the sum of its proper divisors (1175248).

1220432 is an equidigital number, since it uses as much as digits as its factorization.

1220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1220432 is about 1104.7316416216. The cubic root of 1220432 is about 106.8655836807.

Adding to 1220432 its reverse (2340221), we get a palindrome (3560653).

The spelling of 1220432 in words is "one million, two hundred twenty thousand, four hundred thirty-two".