168402936 has 64 divisors (see below), whose sum is σ = 455565600. Its totient is φ = 51568128.

The previous prime is 168402931. The next prime is 168402937. The reversal of 168402936 is 639204861.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 168402894 and 168402903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168402931) 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, 70270 + ... + 72626.

Almost surely, 2^168402936 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 168402936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227782800).

168402936 is an abundant number, since it is smaller than the sum of its proper divisors (287162664).

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

168402936 is a wasteful number, since it uses less digits than its factorization.

168402936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608 (or 2604 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 168402936 is about 12977.0156815810. The cubic root of 168402936 is about 552.2256219035.

The spelling of 168402936 in words is "one hundred sixty-eight million, four hundred two thousand, nine hundred thirty-six".