40903840 has 24 divisors (see below), whose sum is σ = 96635700. Its totient is φ = 16361472.

The previous prime is 40903829. The next prime is 40903843. The reversal of 40903840 is 4830904.

It can be written as a sum of positive squares in 2 ways, for example, as 37015056 + 3888784 = 6084^2 + 1972^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40903799 and 40903808.

It is not an unprimeable number, because it can be changed into a prime (40903843) 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, 127665 + ... + 127984.

Almost surely, 2^40903840 is an apocalyptic number.

40903840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40903840 is an abundant number, since it is smaller than the sum of its proper divisors (55731860).

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

40903840 is a wasteful number, since it uses less digits than its factorization.

40903840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255664 (or 255656 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40903840 is about 6395.6109950497. The cubic root of 40903840 is about 344.5519353114.

The spelling of 40903840 in words is "forty million, nine hundred three thousand, eight hundred forty".