40172250 has 64 divisors (see below), whose sum is σ = 103783680. Its totient is φ = 10337600.

The previous prime is 40172243. The next prime is 40172267. The reversal of 40172250 is 5227104.

It is a super-2 number, since 2×40172250² = 3227619340125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20827 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^40172250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40172250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51891840).

40172250 is an abundant number, since it is smaller than the sum of its proper divisors (63611430).

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

40172250 is a wasteful number, since it uses less digits than its factorization.

40172250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 40172250 is about 6338.1582498388. The cubic root of 40172250 is about 342.4853919569.

Adding to 40172250 its reverse (5227104), we get a palindrome (45399354).

The spelling of 40172250 in words is "forty million, one hundred seventy-two thousand, two hundred fifty".