40540988 has 24 divisors (see below), whose sum is σ = 76158432. Its totient is φ = 18814464.

The previous prime is 40540987. The next prime is 40541009. The reversal of 40540988 is 88904504.

It is a super-2 number, since 2×40540988² = 3287143416032288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881 + ... + 9047.

It is an arithmetic number, because the mean of its divisors is an integer number (3173268).

Almost surely, 2^40540988 is an apocalyptic number.

It is an amenable number.

40540988 is a deficient number, since it is larger than the sum of its proper divisors (35617444).

40540988 is a wasteful number, since it uses less digits than its factorization.

40540988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8261 (or 8259 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 40540988 is about 6367.1805377263. The cubic root of 40540988 is about 343.5300844400.

The spelling of 40540988 in words is "forty million, five hundred forty thousand, nine hundred eighty-eight".