168087402 has 48 divisors (see below), whose sum is σ = 416969280. Its totient is φ = 47938176.

The previous prime is 168087383. The next prime is 168087407. The reversal of 168087402 is 204780861.

It is a super-2 number, since 2×168087402² = 56506749422219208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168087407) 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, 107458 + ... + 109010.

It is an arithmetic number, because the mean of its divisors is an integer number (8686860).

Almost surely, 2^168087402 is an apocalyptic number.

168087402 is an abundant number, since it is smaller than the sum of its proper divisors (248881878).

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

168087402 is a wasteful number, since it uses less digits than its factorization.

168087402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427 (or 2424 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 168087402 is about 12964.8525637587. The cubic root of 168087402 is about 551.8805073739.

The spelling of 168087402 in words is "one hundred sixty-eight million, eighty-seven thousand, four hundred two".