167640140 has 12 divisors (see below), whose sum is σ = 352044336. Its totient is φ = 67056048.

The previous prime is 167640131. The next prime is 167640149. The reversal of 167640140 is 41046761.

It is an interprime number because it is at equal distance from previous prime (167640131) and next prime (167640149).

It is not an unprimeable number, because it can be changed into a prime (167640149) 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, 4190984 + ... + 4191023.

It is an arithmetic number, because the mean of its divisors is an integer number (29337028).

Almost surely, 2^167640140 is an apocalyptic number.

167640140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

167640140 is an abundant number, since it is smaller than the sum of its proper divisors (184404196).

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

167640140 is a wasteful number, since it uses less digits than its factorization.

167640140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382016 (or 8382014 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 167640140 is about 12947.5920541234. The cubic root of 167640140 is about 551.3905748854.

The spelling of 167640140 in words is "one hundred sixty-seven million, six hundred forty thousand, one hundred forty".