40222540 has 12 divisors (see below), whose sum is σ = 84467376. Its totient is φ = 16089008.

The previous prime is 40222537. The next prime is 40222541. The reversal of 40222540 is 4522204.

It is not an unprimeable number, because it can be changed into a prime (40222541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005544 + ... + 1005583.

It is an arithmetic number, because the mean of its divisors is an integer number (7038948).

Almost surely, 2^40222540 is an apocalyptic number.

It is an amenable number.

40222540 is an abundant number, since it is smaller than the sum of its proper divisors (44244836).

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

40222540 is a wasteful number, since it uses less digits than its factorization.

40222540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011136 (or 2011134 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40222540 is about 6342.1242498078. The cubic root of 40222540 is about 342.6282468562.

Adding to 40222540 its reverse (4522204), we get a palindrome (44744744).

The spelling of 40222540 in words is "forty million, two hundred twenty-two thousand, five hundred forty".