40454172 has 108 divisors (see below), whose sum is σ = 115898328. Its totient is φ = 11880000.

The previous prime is 40454137. The next prime is 40454189. The reversal of 40454172 is 27145404.

40454172 is a `hidden beast` number, since 40 + 454 + 172 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 161047 + ... + 161297.

Almost surely, 2^40454172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40454172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57949164).

40454172 is an abundant number, since it is smaller than the sum of its proper divisors (75444156).

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

40454172 is a wasteful number, since it uses less digits than its factorization.

40454172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 40454172 is about 6360.3594238062. The cubic root of 40454172 is about 343.2846931021.

Adding to 40454172 its reverse (27145404), we get a palindrome (67599576).

The spelling of 40454172 in words is "forty million, four hundred fifty-four thousand, one hundred seventy-two".