168420672 has 84 divisors (see below), whose sum is σ = 551724576. Its totient is φ = 48119040.

The previous prime is 168420643. The next prime is 168420673. The reversal of 168420672 is 276024861.

168420672 is a `hidden beast` number, since 168 + 420 + 6 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168420673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16854 + ... + 24917.

Almost surely, 2^168420672 is an apocalyptic number.

168420672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168420672 is an abundant number, since it is smaller than the sum of its proper divisors (383303904).

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

168420672 is a wasteful number, since it uses less digits than its factorization.

168420672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41796 (or 41783 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 168420672 is about 12977.6990256362. The cubic root of 168420672 is about 552.2450078082.

The spelling of 168420672 in words is "one hundred sixty-eight million, four hundred twenty thousand, six hundred seventy-two".