240066538 has 4 divisors (see below), whose sum is σ = 360099810. Its totient is φ = 120033268.

The previous prime is 240066523. The next prime is 240066581. The reversal of 240066538 is 835660042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 240033049 + 33489 = 15493^2 + 183^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60016633 + ... + 60016636.

Almost surely, 2^240066538 is an apocalyptic number.

240066538 is a deficient number, since it is larger than the sum of its proper divisors (120033272).

240066538 is a wasteful number, since it uses less digits than its factorization.

240066538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120033271.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 240066538 is about 15494.0807407216. The cubic root of 240066538 is about 621.5039261721.

The spelling of 240066538 in words is "two hundred forty million, sixty-six thousand, five hundred thirty-eight".