168108428 has 12 divisors (see below), whose sum is σ = 309673560. Its totient is φ = 79630272.

The previous prime is 168108401. The next prime is 168108433. The reversal of 168108428 is 824801861.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 168108391 and 168108400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105901 + ... + 1106052.

It is an arithmetic number, because the mean of its divisors is an integer number (25806130).

Almost surely, 2^168108428 is an apocalyptic number.

It is an amenable number.

168108428 is a deficient number, since it is larger than the sum of its proper divisors (141565132).

168108428 is a wasteful number, since it uses less digits than its factorization.

168108428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211976 (or 2211974 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 168108428 is about 12965.6634230571. The cubic root of 168108428 is about 551.9035179338.

The spelling of 168108428 in words is "one hundred sixty-eight million, one hundred eight thousand, four hundred twenty-eight".