1230200280 has 96 divisors (see below), whose sum is σ = 4127160960. Its totient is φ = 317468160.

The previous prime is 1230200243. The next prime is 1230200281. The reversal of 1230200280 is 820020321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230200281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43957 + ... + 66276.

It is an arithmetic number, because the mean of its divisors is an integer number (42991260).

Almost surely, 2^1230200280 is an apocalyptic number.

1230200280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230200280 is an abundant number, since it is smaller than the sum of its proper divisors (2896960680).

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

1230200280 is a wasteful number, since it uses less digits than its factorization.

1230200280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110281 (or 110274 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1230200280 is about 35074.2110388815. The cubic root of 1230200280 is about 1071.4994205340.

The spelling of 1230200280 in words is "one billion, two hundred thirty million, two hundred thousand, two hundred eighty".