1220352432 has 40 divisors (see below), whose sum is σ = 3395084784. Its totient is φ = 375492864.

The previous prime is 1220352407. The next prime is 1220352433. The reversal of 1220352432 is 2342530221.

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

It is not an unprimeable number, because it can be changed into a prime (1220352433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977223 + ... + 978470.

Almost surely, 2^1220352432 is an apocalyptic number.

1220352432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220352432 is an abundant number, since it is smaller than the sum of its proper divisors (2174732352).

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

1220352432 is a wasteful number, since it uses less digits than its factorization.

1220352432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955717 (or 1955711 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1220352432 is about 34933.5430782507. The cubic root of 1220352432 is about 1068.6326120651.

Adding to 1220352432 its reverse (2342530221), we get a palindrome (3562882653).

The spelling of 1220352432 in words is "one billion, two hundred twenty million, three hundred fifty-two thousand, four hundred thirty-two".