240551988 has 12 divisors (see below), whose sum is σ = 561288000. Its totient is φ = 80183992.

The previous prime is 240551957. The next prime is 240552029. The reversal of 240551988 is 889155042.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-5 number, since 5×240551988⁵ (a number of 43 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10022988 + ... + 10023011.

It is an arithmetic number, because the mean of its divisors is an integer number (46774000).

Almost surely, 2^240551988 is an apocalyptic number.

It is an amenable number.

240551988 is an abundant number, since it is smaller than the sum of its proper divisors (320736012).

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

240551988 is a wasteful number, since it uses less digits than its factorization.

240551988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20046006 (or 20046004 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 240551988 is about 15509.7384890913. The cubic root of 240551988 is about 621.9225683603.

The spelling of 240551988 in words is "two hundred forty million, five hundred fifty-one thousand, nine hundred eighty-eight".