1220230240 has 48 divisors (see below), whose sum is σ = 2897959680. Its totient is φ = 485524480.

The previous prime is 1220230223. The next prime is 1220230283. The reversal of 1220230240 is 420320221.

It is a super-2 number, since 2×1220230240² = 2977923677220915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 10596 + ... + 50524.

It is an arithmetic number, because the mean of its divisors is an integer number (60374160).

Almost surely, 2^1220230240 is an apocalyptic number.

1220230240 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 1220230240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448979840).

1220230240 is an abundant number, since it is smaller than the sum of its proper divisors (1677729440).

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

1220230240 is a wasteful number, since it uses less digits than its factorization.

1220230240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40135 (or 40127 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220230240 is about 34931.7941136724. The cubic root of 1220230240 is about 1068.5969440315.

Adding to 1220230240 its reverse (420320221), we get a palindrome (1640550461).

The spelling of 1220230240 in words is "one billion, two hundred twenty million, two hundred thirty thousand, two hundred forty".