168424890 has 32 divisors (see below), whose sum is σ = 406805760. Its totient is φ = 44625984.

The previous prime is 168424871. The next prime is 168424931. The reversal of 168424890 is 98424861.

It is a super-3 number, since 3×168424890³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13170 + ... + 22589.

It is an arithmetic number, because the mean of its divisors is an integer number (12712680).

Almost surely, 2^168424890 is an apocalyptic number.

168424890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168424890 is an abundant number, since it is smaller than the sum of its proper divisors (238380870).

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

168424890 is a wasteful number, since it uses less digits than its factorization.

168424890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35926.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 168424890 is about 12977.8615341666. The cubic root of 168424890 is about 552.2496179905.

The spelling of 168424890 in words is "one hundred sixty-eight million, four hundred twenty-four thousand, eight hundred ninety".