168023820 has 24 divisors (see below), whose sum is σ = 470466864. Its totient is φ = 44806336.

The previous prime is 168023803. The next prime is 168023831. The reversal of 168023820 is 28320861.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1400139 + ... + 1400258.

It is an arithmetic number, because the mean of its divisors is an integer number (19602786).

Almost surely, 2^168023820 is an apocalyptic number.

168023820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168023820 is an abundant number, since it is smaller than the sum of its proper divisors (302443044).

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

168023820 is a wasteful number, since it uses less digits than its factorization.

168023820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800409 (or 2800407 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 168023820 is about 12962.4002406962. The cubic root of 168023820 is about 551.8109124461.

The spelling of 168023820 in words is "one hundred sixty-eight million, twenty-three thousand, eight hundred twenty".