40222440 has 64 divisors (see below), whose sum is σ = 134078400. Its totient is φ = 10725696.

The previous prime is 40222439. The next prime is 40222453. The reversal of 40222440 is 4422204.

40222440 is a `hidden beast` number, since 4 + 0 + 222 + 440 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17542 + ... + 19701.

It is an arithmetic number, because the mean of its divisors is an integer number (2094975).

Almost surely, 2^40222440 is an apocalyptic number.

40222440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40222440 is an abundant number, since it is smaller than the sum of its proper divisors (93855960).

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

40222440 is a wasteful number, since it uses less digits than its factorization.

40222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37263 (or 37253 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40222440 is about 6342.1163660091. The cubic root of 40222440 is about 342.6279629122.

Adding to 40222440 its reverse (4422204), we get a palindrome (44644644).

The spelling of 40222440 in words is "forty million, two hundred twenty-two thousand, four hundred forty".