40170234 has 64 divisors (see below), whose sum is σ = 91929600. Its totient is φ = 11612160.

The previous prime is 40170223. The next prime is 40170241. The reversal of 40170234 is 43207104.

It is a super-2 number, since 2×40170234² = 3227295399229512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40170234.

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, 89242 + ... + 89690.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^40170234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40170234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45964800).

40170234 is an abundant number, since it is smaller than the sum of its proper divisors (51759366).

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

40170234 is a wasteful number, since it uses less digits than its factorization.

40170234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40170234 is about 6337.9992111076. Note that the first 3 decimals coincide. The cubic root of 40170234 is about 342.4796627774.

Adding to 40170234 its reverse (43207104), we get a palindrome (83377338).

It can be divided in two parts, 40170 and 234, that added together give a palindrome (40404).

The spelling of 40170234 in words is "forty million, one hundred seventy thousand, two hundred thirty-four".