40000172 has 12 divisors (see below), whose sum is σ = 70048440. Its totient is φ = 19986336.

The previous prime is 40000159. The next prime is 40000183. The reversal of 40000172 is 27100004.

It is a happy number.

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, 5963 + ... + 10749.

It is an arithmetic number, because the mean of its divisors is an integer number (5837370).

Almost surely, 2^40000172 is an apocalyptic number.

It is an amenable number.

40000172 is a deficient number, since it is larger than the sum of its proper divisors (30048268).

40000172 is a wasteful number, since it uses less digits than its factorization.

40000172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6880 (or 6878 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 40000172 is about 6324.5689181161. The cubic root of 40000172 is about 341.9956795277.

Adding to 40000172 its reverse (27100004), we get a palindrome (67100176).

The spelling of 40000172 in words is "forty million, one hundred seventy-two", and thus it is an aban number.