168978952 has 16 divisors (see below), whose sum is σ = 317071440. Its totient is φ = 84426576.

The previous prime is 168978941. The next prime is 168978983. The reversal of 168978952 is 259879861.

It is a junction number, because it is equal to n+sod(n) for n = 168978893 and 168978902.

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, 4743 + ... + 18985.

It is an arithmetic number, because the mean of its divisors is an integer number (19816965).

Almost surely, 2^168978952 is an apocalyptic number.

It is an amenable number.

168978952 is a deficient number, since it is larger than the sum of its proper divisors (148092488).

168978952 is a wasteful number, since it uses less digits than its factorization.

168978952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15732 (or 15728 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The square root of 168978952 is about 12999.1904363310. The cubic root of 168978952 is about 552.8545278208.

Subtracting 168978952 from its reverse (259879861), we obtain a palindrome (90900909).

The spelling of 168978952 in words is "one hundred sixty-eight million, nine hundred seventy-eight thousand, nine hundred fifty-two".