40670172 has 36 divisors (see below), whose sum is σ = 103028016. Its totient is φ = 13527360.

The previous prime is 40670167. The next prime is 40670173. The reversal of 40670172 is 27107604.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40670173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21297 + ... + 23127.

Almost surely, 2^40670172 is an apocalyptic number.

It is an amenable number.

40670172 is an abundant number, since it is smaller than the sum of its proper divisors (62357844).

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

40670172 is a wasteful number, since it uses less digits than its factorization.

40670172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 40670172 is about 6377.3169907101. The cubic root of 40670172 is about 343.8945841589.

Adding to 40670172 its reverse (27107604), we get a palindrome (67777776).

The spelling of 40670172 in words is "forty million, six hundred seventy thousand, one hundred seventy-two".