240428129922 has 54 divisors (see below), whose sum is σ = 532463538243. Its totient is φ = 78405647784.

The previous prime is 240428129863. The next prime is 240428129923. The reversal of 240428129922 is 229921824042.

240428129922 is a `hidden beast` number, since 240 + 42 + 81 + 299 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120214064961 + 120214064961 = 346719^2 + 346719^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=346719.

It is a super-2 number, since 2×240428129922² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (240428129923) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 97773529 + ... + 97775987.

Almost surely, 2^240428129922 is an apocalyptic number.

240428129922 is an abundant number, since it is smaller than the sum of its proper divisors (292035408321).

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

240428129922 is an frugal number, since it uses more digits than its factorization.

240428129922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020 (or 2511 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 240428129922 in words is "two hundred forty billion, four hundred twenty-eight million, one hundred twenty-nine thousand, nine hundred twenty-two".