167840428 has 12 divisors (see below), whose sum is σ = 335680912. Its totient is φ = 71931600.

The previous prime is 167840423. The next prime is 167840447. The reversal of 167840428 is 824048761.

167840428 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (167840423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2997123 + ... + 2997178.

Almost surely, 2^167840428 is an apocalyptic number.

It is an amenable number.

167840428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

167840428 is a wasteful number, since it uses less digits than its factorization.

167840428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994312 (or 5994310 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 167840428 is about 12955.3243108770. The cubic root of 167840428 is about 551.6100787249.

The spelling of 167840428 in words is "one hundred sixty-seven million, eight hundred forty thousand, four hundred twenty-eight".