168402546 has 48 divisors (see below), whose sum is σ = 394482816. Its totient is φ = 51612768.

The previous prime is 168402523. The next prime is 168402547. The reversal of 168402546 is 645204861.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168402546.

It is not an unprimeable number, because it can be changed into a prime (168402547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64951 + ... + 67493.

It is an arithmetic number, because the mean of its divisors is an integer number (8218392).

Almost surely, 2^168402546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168402546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197241408).

168402546 is an abundant number, since it is smaller than the sum of its proper divisors (226080270).

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

168402546 is a wasteful number, since it uses less digits than its factorization.

168402546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847 (or 2844 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 168402546 is about 12977.0006550050. Note that the first 3 decimals coincide. The cubic root of 168402546 is about 552.2251956081.

The spelling of 168402546 in words is "one hundred sixty-eight million, four hundred two thousand, five hundred forty-six".