40233540 has 24 divisors (see below), whose sum is σ = 112654080. Its totient is φ = 10728928.

The previous prime is 40233539. The next prime is 40233547. The reversal of 40233540 is 4533204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40233547) 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, 335220 + ... + 335339.

It is an arithmetic number, because the mean of its divisors is an integer number (4693920).

Almost surely, 2^40233540 is an apocalyptic number.

It is an amenable number.

40233540 is an abundant number, since it is smaller than the sum of its proper divisors (72420540).

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

40233540 is a wasteful number, since it uses less digits than its factorization.

40233540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670571 (or 670569 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 40233540 is about 6342.9914078454. The cubic root of 40233540 is about 342.6594778293.

Adding to 40233540 its reverse (4533204), we get a palindrome (44766744).

The spelling of 40233540 in words is "forty million, two hundred thirty-three thousand, five hundred forty".