1220550432 has 24 divisors (see below), whose sum is σ = 3203945136. Its totient is φ = 406850112.

The previous prime is 1220550431. The next prime is 1220550433. The reversal of 1220550432 is 2340550221.

It is an interprime number because it is at equal distance from previous prime (1220550431) and next prime (1220550433).

It is a tau number, because it is divible by the number of its divisors (24).

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 (1220550431) 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, 6356938 + ... + 6357129.

It is an arithmetic number, because the mean of its divisors is an integer number (133497714).

Almost surely, 2^1220550432 is an apocalyptic number.

1220550432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220550432 is an abundant number, since it is smaller than the sum of its proper divisors (1983394704).

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

1220550432 is a wasteful number, since it uses less digits than its factorization.

1220550432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12714080 (or 12714072 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1220550432 is about 34936.3769157593. The cubic root of 1220550432 is about 1068.6904035165.

The spelling of 1220550432 in words is "one billion, two hundred twenty million, five hundred fifty thousand, four hundred thirty-two".