240626646 has 64 divisors (see below), whose sum is σ = 580608000. Its totient is φ = 73428768.

The previous prime is 240626641. The next prime is 240626647. The reversal of 240626646 is 646626042.

240626646 is a `hidden beast` number, since 2 + 4 + 0 + 6 + 2 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 240626646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240626641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87805 + ... + 90503.

It is an arithmetic number, because the mean of its divisors is an integer number (9072000).

Almost surely, 2^240626646 is an apocalyptic number.

240626646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 240626646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290304000).

240626646 is an abundant number, since it is smaller than the sum of its proper divisors (339981354).

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

240626646 is a wasteful number, since it uses less digits than its factorization.

240626646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850 (or 2844 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 240626646 is about 15512.1451127818. The cubic root of 240626646 is about 621.9869019136.

The spelling of 240626646 in words is "two hundred forty million, six hundred twenty-six thousand, six hundred forty-six".