240155478 has 48 divisors (see below), whose sum is σ = 549123120. Its totient is φ = 75644928.

The previous prime is 240155453. The next prime is 240155479. The reversal of 240155478 is 874551042.

It is a super-2 number, since 2×240155478² = 115349307226816968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240155479) 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, 196726 + ... + 197942.

It is an arithmetic number, because the mean of its divisors is an integer number (11440065).

Almost surely, 2^240155478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240155478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274561560).

240155478 is an abundant number, since it is smaller than the sum of its proper divisors (308967642).

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

240155478 is a wasteful number, since it uses less digits than its factorization.

240155478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 240155478 is about 15496.9506032639. The cubic root of 240155478 is about 621.5806684159.

The spelling of 240155478 in words is "two hundred forty million, one hundred fifty-five thousand, four hundred seventy-eight".