168720038 has 8 divisors (see below), whose sum is σ = 266400120. Its totient is φ = 79920000.

The previous prime is 168720029. The next prime is 168720049. The reversal of 168720038 is 830027861.

168720038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219963 + ... + 2220038.

It is an arithmetic number, because the mean of its divisors is an integer number (33300015).

Almost surely, 2^168720038 is an apocalyptic number.

168720038 is a deficient number, since it is larger than the sum of its proper divisors (97680082).

168720038 is a wasteful number, since it uses less digits than its factorization.

168720038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440022.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 168720038 is about 12989.2277676542. The cubic root of 168720038 is about 552.5720173930.

Adding to 168720038 its reverse (830027861), we get a palindrome (998747899).

The spelling of 168720038 in words is "one hundred sixty-eight million, seven hundred twenty thousand, thirty-eight".