40263220 has 24 divisors (see below), whose sum is σ = 84672000. Its totient is φ = 16082592.

The previous prime is 40263211. The next prime is 40263229. The reversal of 40263220 is 2236204.

40263220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40263211) and next prime (40263229).

It is a super-2 number, since 2×40263220² = 3242253769536800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40263229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27261 + ... + 28699.

It is an arithmetic number, because the mean of its divisors is an integer number (3528000).

Almost surely, 2^40263220 is an apocalyptic number.

It is an amenable number.

40263220 is an abundant number, since it is smaller than the sum of its proper divisors (44408780).

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

40263220 is a wasteful number, since it uses less digits than its factorization.

40263220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40263220 is about 6345.3305666451. The cubic root of 40263220 is about 342.7437162824.

Adding to 40263220 its reverse (2236204), we get a palindrome (42499424).

The spelling of 40263220 in words is "forty million, two hundred sixty-three thousand, two hundred twenty".