168979824 has 80 divisors (see below), whose sum is σ = 522362400. Its totient is φ = 51992064.

The previous prime is 168979823. The next prime is 168979831. The reversal of 168979824 is 428979861.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168979823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9429 + ... + 20660.

It is an arithmetic number, because the mean of its divisors is an integer number (6529530).

Almost surely, 2^168979824 is an apocalyptic number.

It is an amenable number.

168979824 is an abundant number, since it is smaller than the sum of its proper divisors (353382576).

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

168979824 is a wasteful number, since it uses less digits than its factorization.

168979824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30119 (or 30107 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 168979824 is about 12999.2239768380. The cubic root of 168979824 is about 552.8554788038.

The spelling of 168979824 in words is "one hundred sixty-eight million, nine hundred seventy-nine thousand, eight hundred twenty-four".