1220878230 has 64 divisors (see below), whose sum is σ = 3442376448. Its totient is φ = 273202560.

The previous prime is 1220878223. The next prime is 1220878247. The reversal of 1220878230 is 328780221.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1220878191 and 1220878200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138004 + ... + 146583.

It is an arithmetic number, because the mean of its divisors is an integer number (53787132).

Almost surely, 2^1220878230 is an apocalyptic number.

1220878230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220878230 is an abundant number, since it is smaller than the sum of its proper divisors (2221498218).

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

1220878230 is a wasteful number, since it uses less digits than its factorization.

1220878230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284621.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 1220878230 is about 34941.0679573478. The cubic root of 1220878230 is about 1068.7860661541.

The spelling of 1220878230 in words is "one billion, two hundred twenty million, eight hundred seventy-eight thousand, two hundred thirty".