167978652 has 12 divisors (see below), whose sum is σ = 391950216. Its totient is φ = 55992880.

The previous prime is 167978651. The next prime is 167978659. The reversal of 167978652 is 256879761.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 167978595 and 167978604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167978651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6999099 + ... + 6999122.

It is an arithmetic number, because the mean of its divisors is an integer number (32662518).

Almost surely, 2^167978652 is an apocalyptic number.

167978652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

167978652 is an abundant number, since it is smaller than the sum of its proper divisors (223971564).

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

167978652 is a wasteful number, since it uses less digits than its factorization.

167978652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998228 (or 13998226 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The square root of 167978652 is about 12960.6578536739. The cubic root of 167978652 is about 551.7614622571.

The spelling of 167978652 in words is "one hundred sixty-seven million, nine hundred seventy-eight thousand, six hundred fifty-two".