123302820 has 48 divisors (see below), whose sum is σ = 348683328. Its totient is φ = 32553600.

The previous prime is 123302813. The next prime is 123302849. The reversal of 123302820 is 28203321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4114 + ... + 16233.

It is an arithmetic number, because the mean of its divisors is an integer number (7264236).

Almost surely, 2^123302820 is an apocalyptic number.

123302820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123302820 is an abundant number, since it is smaller than the sum of its proper divisors (225380508).

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

123302820 is a wasteful number, since it uses less digits than its factorization.

123302820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460 (or 20458 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 123302820 is about 11104.1802939253. The cubic root of 123302820 is about 497.7267738821.

The spelling of 123302820 in words is "one hundred twenty-three million, three hundred two thousand, eight hundred twenty".