168939756 has 60 divisors (see below), whose sum is σ = 443780568. Its totient is φ = 56040768.

The previous prime is 168939737. The next prime is 168939767. The reversal of 168939756 is 657939861.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72400 + ... + 74696.

Almost surely, 2^168939756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168939756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221890284).

168939756 is an abundant number, since it is smaller than the sum of its proper divisors (274840812).

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

168939756 is a wasteful number, since it uses less digits than its factorization.

168939756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540 (or 2529 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 168939756 is about 12997.6827165461. The cubic root of 168939756 is about 552.8117781933.

The spelling of 168939756 in words is "one hundred sixty-eight million, nine hundred thirty-nine thousand, seven hundred fifty-six".