168347412 has 18 divisors (see below), whose sum is σ = 425544938. Its totient is φ = 56115792.

The previous prime is 168347371. The next prime is 168347437. The reversal of 168347412 is 214743861.

It can be written as a sum of positive squares in only one way, i.e., 159668496 + 8678916 = 12636^2 + 2946^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×168347412² = 56681702254195488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4676317 = 168347412 / (1 + 6 + 8 + 3 + 4 + 7 + 4 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2338123 + ... + 2338194.

Almost surely, 2^168347412 is an apocalyptic number.

168347412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168347412 is an abundant number, since it is smaller than the sum of its proper divisors (257197526).

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

168347412 is a wasteful number, since it uses less digits than its factorization.

168347412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676327 (or 4676322 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 168347412 is about 12974.8761843803. The cubic root of 168347412 is about 552.1649239398.

The spelling of 168347412 in words is "one hundred sixty-eight million, three hundred forty-seven thousand, four hundred twelve".