240915988 has 12 divisors (see below), whose sum is σ = 422657172. Its totient is φ = 120156800.

The previous prime is 240915977. The next prime is 240915989. The reversal of 240915988 is 889519042.

It can be written as a sum of positive squares in 2 ways, for example, as 197908624 + 43007364 = 14068^2 + 6558^2 .

It is a super-4 number, since 4×240915988⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240915989) 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, 73495 + ... + 76702.

It is an arithmetic number, because the mean of its divisors is an integer number (35221431).

Almost surely, 2^240915988 is an apocalyptic number.

It is an amenable number.

240915988 is a deficient number, since it is larger than the sum of its proper divisors (181741184).

240915988 is a wasteful number, since it uses less digits than its factorization.

240915988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150602 (or 150600 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 240915988 is about 15521.4686160814. The cubic root of 240915988 is about 622.2361051938.

The spelling of 240915988 in words is "two hundred forty million, nine hundred fifteen thousand, nine hundred eighty-eight".