140161672 has 32 divisors (see below), whose sum is σ = 300873600. Its totient is φ = 59963904.

The previous prime is 140161649. The next prime is 140161691. The reversal of 140161672 is 276161041.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 140161672.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35829 + ... + 39547.

It is an arithmetic number, because the mean of its divisors is an integer number (9402300).

Almost surely, 2^140161672 is an apocalyptic number.

It is an amenable number.

140161672 is an abundant number, since it is smaller than the sum of its proper divisors (160711928).

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

140161672 is a wasteful number, since it uses less digits than its factorization.

140161672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405 (or 4401 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 140161672 is about 11838.9894839044. The cubic root of 140161672 is about 519.4492097016.

The spelling of 140161672 in words is "one hundred forty million, one hundred sixty-one thousand, six hundred seventy-two".