168471840 has 48 divisors (see below), whose sum is σ = 530687808. Its totient is φ = 44925696.

The previous prime is 168471827. The next prime is 168471851. The reversal of 168471840 is 48174861.

It is a tau number, because it is divible by the number of its divisors (48).

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, 175012 + ... + 175971.

It is an arithmetic number, because the mean of its divisors is an integer number (11055996).

Almost surely, 2^168471840 is an apocalyptic number.

168471840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168471840 is an abundant number, since it is smaller than the sum of its proper divisors (362215968).

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

168471840 is a wasteful number, since it uses less digits than its factorization.

168471840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351001 (or 350993 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 168471840 is about 12979.6702577531. The cubic root of 168471840 is about 552.3009281238.

The spelling of 168471840 in words is "one hundred sixty-eight million, four hundred seventy-one thousand, eight hundred forty".