240081534 has 48 divisors (see below), whose sum is σ = 648535680. Its totient is φ = 62358480.

The previous prime is 240081533. The next prime is 240081607. The reversal of 240081534 is 435180042.

It is a junction number, because it is equal to n+sod(n) for n = 240081498 and 240081507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240081533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85224 + ... + 87995.

It is an arithmetic number, because the mean of its divisors is an integer number (13511160).

Almost surely, 2^240081534 is an apocalyptic number.

240081534 is an abundant number, since it is smaller than the sum of its proper divisors (408454146).

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

240081534 is a wasteful number, since it uses less digits than its factorization.

240081534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173245 (or 173242 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 240081534 is about 15494.5646599057. The cubic root of 240081534 is about 621.5168668606.

The spelling of 240081534 in words is "two hundred forty million, eighty-one thousand, five hundred thirty-four".