40118022 has 48 divisors (see below), whose sum is σ = 99919872. Its totient is φ = 11395440.

The previous prime is 40118021. The next prime is 40118033. The reversal of 40118022 is 22081104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40117986 and 40118004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40118021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23233 + ... + 24899.

It is an arithmetic number, because the mean of its divisors is an integer number (2081664).

Almost surely, 2^40118022 is an apocalyptic number.

40118022 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40118022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49959936).

40118022 is an abundant number, since it is smaller than the sum of its proper divisors (59801850).

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

40118022 is a wasteful number, since it uses less digits than its factorization.

40118022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 40118022 is about 6333.8789063259. The cubic root of 40118022 is about 342.3312170315.

Adding to 40118022 its reverse (22081104), we get a palindrome (62199126).

The spelling of 40118022 in words is "forty million, one hundred eighteen thousand, twenty-two".