40226240 has 28 divisors (see below), whose sum is σ = 95789496. Its totient is φ = 16090368.

The previous prime is 40226239. The next prime is 40226279. The reversal of 40226240 is 4262204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62534 + ... + 63173.

Almost surely, 2^40226240 is an apocalyptic number.

40226240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40226240 is an abundant number, since it is smaller than the sum of its proper divisors (55563256).

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

40226240 is a wasteful number, since it uses less digits than its factorization.

40226240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125724 (or 125714 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40226240 is about 6342.4159434714. The cubic root of 40226240 is about 342.6387524554.

Adding to 40226240 its reverse (4262204), we get a palindrome (44488444).

The spelling of 40226240 in words is "forty million, two hundred twenty-six thousand, two hundred forty".